Home / 138,841,487,138.98-191,585,932,595.61-77,861,305,433.32

Finding the Fourth Proportional to 138,841,487,138.98, 191,585,932,595.61 and 77,861,305,433.32

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Solution

The fourth proportional to 138,841,487,138.98, 191,585,932,595.61 and 77,861,305,433.32 is: 107,440,010,345.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,841,487,138.98 : 191,585,932,595.61 = 77,861,305,433.32 : x
  2. Step 2: Convert to fraction form
    138,841,487,138.98/191,585,932,595.61 = 77,861,305,433.32/x
  3. Step 3: Cross multiply
    138,841,487,138.98x = 191,585,932,595.61 × 77,861,305,433.32
  4. Step 4: Simplify right side
    138,841,487,138.98x = 14,917,130,814,554,248,314,880
  5. Step 5: Solve for x
    x = 14,917,130,814,554,248,314,880/138,841,487,138.98
  6. Step 6: Final answer
    x = 107,440,010,345.20

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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.