Home / 138,858,954.18-208,292,821.89-51,442,348.64

Finding the Fourth Proportional to 138,858,954.18, 208,292,821.89 and 51,442,348.64

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Solution

The fourth proportional to 138,858,954.18, 208,292,821.89 and 51,442,348.64 is: 77,165,149.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,858,954.18 : 208,292,821.89 = 51,442,348.64 : x
  2. Step 2: Convert to fraction form
    138,858,954.18/208,292,821.89 = 51,442,348.64/x
  3. Step 3: Cross multiply
    138,858,954.18x = 208,292,821.89 × 51,442,348.64
  4. Step 4: Simplify right side
    138,858,954.18x = 10,715,071,962,812,078
  5. Step 5: Solve for x
    x = 10,715,071,962,812,078/138,858,954.18
  6. Step 6: Final answer
    x = 77,165,149.53

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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.