Home / 138,719,387.20-208,016,095.20-52,429,115.20

Finding the Fourth Proportional to 138,719,387.20, 208,016,095.20 and 52,429,115.20

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Solution

The fourth proportional to 138,719,387.20, 208,016,095.20 and 52,429,115.20 is: 78,619,867.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,719,387.20 : 208,016,095.20 = 52,429,115.20 : x
  2. Step 2: Convert to fraction form
    138,719,387.20/208,016,095.20 = 52,429,115.20/x
  3. Step 3: Cross multiply
    138,719,387.20x = 208,016,095.20 × 52,429,115.20
  4. Step 4: Simplify right side
    138,719,387.20x = 10,906,099,818,694,968
  5. Step 5: Solve for x
    x = 10,906,099,818,694,968/138,719,387.20
  6. Step 6: Final answer
    x = 78,619,867.34

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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.