Home / 138,847,003.42-208,123,663.80-51,352,291.74

Finding the Fourth Proportional to 138,847,003.42, 208,123,663.80 and 51,352,291.74

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Solution

The fourth proportional to 138,847,003.42, 208,123,663.80 and 51,352,291.74 is: 76,974,128.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,847,003.42 : 208,123,663.80 = 51,352,291.74 : x
  2. Step 2: Convert to fraction form
    138,847,003.42/208,123,663.80 = 51,352,291.74/x
  3. Step 3: Cross multiply
    138,847,003.42x = 208,123,663.80 × 51,352,291.74
  4. Step 4: Simplify right side
    138,847,003.42x = 10,687,627,101,198,516
  5. Step 5: Solve for x
    x = 10,687,627,101,198,516/138,847,003.42
  6. Step 6: Final answer
    x = 76,974,128.63

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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.