Home / 103,545.72-155,220.15-66,000.39

Finding the Fourth Proportional to 103,545.72, 155,220.15 and 66,000.39

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Solution

The fourth proportional to 103,545.72, 155,220.15 and 66,000.39 is: 98,937.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,545.72 : 155,220.15 = 66,000.39 : x
  2. Step 2: Convert to fraction form
    103,545.72/155,220.15 = 66,000.39/x
  3. Step 3: Cross multiply
    103,545.72x = 155,220.15 × 66,000.39
  4. Step 4: Simplify right side
    103,545.72x = 10,244,590,435.86
  5. Step 5: Solve for x
    x = 10,244,590,435.86/103,545.72
  6. Step 6: Final answer
    x = 98,937.85

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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.