Home / 138,276,021.78-207,387,124.86-39,900,812.22

Finding the Fourth Proportional to 138,276,021.78, 207,387,124.86 and 39,900,812.22

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Solution

The fourth proportional to 138,276,021.78, 207,387,124.86 and 39,900,812.22 is: 59,843,453.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,276,021.78 : 207,387,124.86 = 39,900,812.22 : x
  2. Step 2: Convert to fraction form
    138,276,021.78/207,387,124.86 = 39,900,812.22/x
  3. Step 3: Cross multiply
    138,276,021.78x = 207,387,124.86 × 39,900,812.22
  4. Step 4: Simplify right side
    138,276,021.78x = 8,274,914,725,884,554
  5. Step 5: Solve for x
    x = 8,274,914,725,884,554/138,276,021.78
  6. Step 6: Final answer
    x = 59,843,453.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.