Home / 138,008,954,332.20-207,013,431,498.30-90,898,622,869.80

Finding the Fourth Proportional to 138,008,954,332.20, 207,013,431,498.30 and 90,898,622,869.80

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Solution

The fourth proportional to 138,008,954,332.20, 207,013,431,498.30 and 90,898,622,869.80 is: 136,347,934,304.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,008,954,332.20 : 207,013,431,498.30 = 90,898,622,869.80 : x
  2. Step 2: Convert to fraction form
    138,008,954,332.20/207,013,431,498.30 = 90,898,622,869.80/x
  3. Step 3: Cross multiply
    138,008,954,332.20x = 207,013,431,498.30 × 90,898,622,869.80
  4. Step 4: Simplify right side
    138,008,954,332.20x = 18,817,235,838,747,147,239,424
  5. Step 5: Solve for x
    x = 18,817,235,838,747,147,239,424/138,008,954,332.20
  6. Step 6: Final answer
    x = 136,347,934,304.70

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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.