Home / 131,138,816.74-180,967,965.11-72,400,414.48

Finding the Fourth Proportional to 131,138,816.74, 180,967,965.11 and 72,400,414.48

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Solution

The fourth proportional to 131,138,816.74, 180,967,965.11 and 72,400,414.48 is: 99,910,583.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,138,816.74 : 180,967,965.11 = 72,400,414.48 : x
  2. Step 2: Convert to fraction form
    131,138,816.74/180,967,965.11 = 72,400,414.48/x
  3. Step 3: Cross multiply
    131,138,816.74x = 180,967,965.11 × 72,400,414.48
  4. Step 4: Simplify right side
    131,138,816.74x = 13,102,155,681,023,258
  5. Step 5: Solve for x
    x = 13,102,155,681,023,258/131,138,816.74
  6. Step 6: Final answer
    x = 99,910,583.36

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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.