Home / 138,164,821.80-207,247,232.70-42,414,268.20

Finding the Fourth Proportional to 138,164,821.80, 207,247,232.70 and 42,414,268.20

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Solution

The fourth proportional to 138,164,821.80, 207,247,232.70 and 42,414,268.20 is: 63,621,402.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,164,821.80 : 207,247,232.70 = 42,414,268.20 : x
  2. Step 2: Convert to fraction form
    138,164,821.80/207,247,232.70 = 42,414,268.20/x
  3. Step 3: Cross multiply
    138,164,821.80x = 207,247,232.70 × 42,414,268.20
  4. Step 4: Simplify right side
    138,164,821.80x = 8,790,239,711,445,610
  5. Step 5: Solve for x
    x = 8,790,239,711,445,610/138,164,821.80
  6. Step 6: Final answer
    x = 63,621,402.30

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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.