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Finding the Fourth Proportional to 107,545.80, 161,145.90 and 89,920.20

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Solution

The fourth proportional to 107,545.80, 161,145.90 and 89,920.20 is: 134,735.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,545.80 : 161,145.90 = 89,920.20 : x
  2. Step 2: Convert to fraction form
    107,545.80/161,145.90 = 89,920.20/x
  3. Step 3: Cross multiply
    107,545.80x = 161,145.90 × 89,920.20
  4. Step 4: Simplify right side
    107,545.80x = 14,490,271,557.18
  5. Step 5: Solve for x
    x = 14,490,271,557.18/107,545.80
  6. Step 6: Final answer
    x = 134,735.82

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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.