Home / 138,398,410.70-207,455,898.45-80,861,065.10

Finding the Fourth Proportional to 138,398,410.70, 207,455,898.45 and 80,861,065.10

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Solution

The fourth proportional to 138,398,410.70, 207,455,898.45 and 80,861,065.10 is: 121,208,797.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,398,410.70 : 207,455,898.45 = 80,861,065.10 : x
  2. Step 2: Convert to fraction form
    138,398,410.70/207,455,898.45 = 80,861,065.10/x
  3. Step 3: Cross multiply
    138,398,410.70x = 207,455,898.45 × 80,861,065.10
  4. Step 4: Simplify right side
    138,398,410.70x = 16,775,104,909,944,436
  5. Step 5: Solve for x
    x = 16,775,104,909,944,436/138,398,410.70
  6. Step 6: Final answer
    x = 121,208,797.31

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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.