Home / 138,841,487,138.48-191,585,932,594.92-77,861,305,432.82

Finding the Fourth Proportional to 138,841,487,138.48, 191,585,932,594.92 and 77,861,305,432.82

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Solution

The fourth proportional to 138,841,487,138.48, 191,585,932,594.92 and 77,861,305,432.82 is: 107,440,010,344.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,841,487,138.48 : 191,585,932,594.92 = 77,861,305,432.82 : x
  2. Step 2: Convert to fraction form
    138,841,487,138.48/191,585,932,594.92 = 77,861,305,432.82/x
  3. Step 3: Cross multiply
    138,841,487,138.48x = 191,585,932,594.92 × 77,861,305,432.82
  4. Step 4: Simplify right side
    138,841,487,138.48x = 14,917,130,814,404,733,960,192
  5. Step 5: Solve for x
    x = 14,917,130,814,404,733,960,192/138,841,487,138.48
  6. Step 6: Final answer
    x = 107,440,010,344.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.