Home / 137,531.28-206,338.65-66,455.82

Finding the Fourth Proportional to 137,531.28, 206,338.65 and 66,455.82

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Solution

The fourth proportional to 137,531.28, 206,338.65 and 66,455.82 is: 99,703.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,531.28 : 206,338.65 = 66,455.82 : x
  2. Step 2: Convert to fraction form
    137,531.28/206,338.65 = 66,455.82/x
  3. Step 3: Cross multiply
    137,531.28x = 206,338.65 × 66,455.82
  4. Step 4: Simplify right side
    137,531.28x = 13,712,404,183.44
  5. Step 5: Solve for x
    x = 13,712,404,183.44/137,531.28
  6. Step 6: Final answer
    x = 99,703.89

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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.