Home / 103,545.49-155,115.25-53,658.31

Finding the Fourth Proportional to 103,545.49, 155,115.25 and 53,658.31

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Solution

The fourth proportional to 103,545.49, 155,115.25 and 53,658.31 is: 80,382.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,545.49 : 155,115.25 = 53,658.31 : x
  2. Step 2: Convert to fraction form
    103,545.49/155,115.25 = 53,658.31/x
  3. Step 3: Cross multiply
    103,545.49x = 155,115.25 × 53,658.31
  4. Step 4: Simplify right side
    103,545.49x = 8,323,222,170.23
  5. Step 5: Solve for x
    x = 8,323,222,170.23/103,545.49
  6. Step 6: Final answer
    x = 80,382.28

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1.5x scale

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.