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Finding the Fourth Proportional to 115,543.80, 173,121.30 and 108,545.40

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Solution

The fourth proportional to 115,543.80, 173,121.30 and 108,545.40 is: 162,635.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,543.80 : 173,121.30 = 108,545.40 : x
  2. Step 2: Convert to fraction form
    115,543.80/173,121.30 = 108,545.40/x
  3. Step 3: Cross multiply
    115,543.80x = 173,121.30 × 108,545.40
  4. Step 4: Simplify right side
    115,543.80x = 18,791,520,757.02
  5. Step 5: Solve for x
    x = 18,791,520,757.02/115,543.80
  6. Step 6: Final answer
    x = 162,635.47

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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.