Home / 138,891.90-208,305.50-39,061.73

Finding the Fourth Proportional to 138,891.90, 208,305.50 and 39,061.73

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Solution

The fourth proportional to 138,891.90, 208,305.50 and 39,061.73 is: 58,583.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,891.90 : 208,305.50 = 39,061.73 : x
  2. Step 2: Convert to fraction form
    138,891.90/208,305.50 = 39,061.73/x
  3. Step 3: Cross multiply
    138,891.90x = 208,305.50 × 39,061.73
  4. Step 4: Simplify right side
    138,891.90x = 8,136,773,198.52
  5. Step 5: Solve for x
    x = 8,136,773,198.52/138,891.90
  6. Step 6: Final answer
    x = 58,583.50

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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.