Home / 138,841,487,105.79-191,585,932,549.70-77,861,305,400.13

Finding the Fourth Proportional to 138,841,487,105.79, 191,585,932,549.70 and 77,861,305,400.13

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Solution

The fourth proportional to 138,841,487,105.79, 191,585,932,549.70 and 77,861,305,400.13 is: 107,440,010,299.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,841,487,105.79 : 191,585,932,549.70 = 77,861,305,400.13 : x
  2. Step 2: Convert to fraction form
    138,841,487,105.79/191,585,932,549.70 = 77,861,305,400.13/x
  3. Step 3: Cross multiply
    138,841,487,105.79x = 191,585,932,549.70 × 77,861,305,400.13
  4. Step 4: Simplify right side
    138,841,487,105.79x = 14,917,130,804,620,901,220,352
  5. Step 5: Solve for x
    x = 14,917,130,804,620,901,220,352/138,841,487,105.79
  6. Step 6: Final answer
    x = 107,440,010,299.33

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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.