Home / 103,425.06-155,146.53-28,545.21

Finding the Fourth Proportional to 103,425.06, 155,146.53 and 28,545.21

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Solution

The fourth proportional to 103,425.06, 155,146.53 and 28,545.21 is: 42,820.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,425.06 : 155,146.53 = 28,545.21 : x
  2. Step 2: Convert to fraction form
    103,425.06/155,146.53 = 28,545.21/x
  3. Step 3: Cross multiply
    103,425.06x = 155,146.53 × 28,545.21
  4. Step 4: Simplify right side
    103,425.06x = 4,428,690,279.62
  5. Step 5: Solve for x
    x = 4,428,690,279.62/103,425.06
  6. Step 6: Final answer
    x = 42,820.28

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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.