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Finding the Fourth Proportional to 95,545.80, 143,145.90 and 77,920.20

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Solution

The fourth proportional to 95,545.80, 143,145.90 and 77,920.20 is: 116,739.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,545.80 : 143,145.90 = 77,920.20 : x
  2. Step 2: Convert to fraction form
    95,545.80/143,145.90 = 77,920.20/x
  3. Step 3: Cross multiply
    95,545.80x = 143,145.90 × 77,920.20
  4. Step 4: Simplify right side
    95,545.80x = 11,153,957,157.18
  5. Step 5: Solve for x
    x = 11,153,957,157.18/95,545.80
  6. Step 6: Final answer
    x = 116,739.38

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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.