Home / 99,679.20-149,463.60-39,646.80

Finding the Fourth Proportional to 99,679.20, 149,463.60 and 39,646.80

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Solution

The fourth proportional to 99,679.20, 149,463.60 and 39,646.80 is: 59,448.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,679.20 : 149,463.60 = 39,646.80 : x
  2. Step 2: Convert to fraction form
    99,679.20/149,463.60 = 39,646.80/x
  3. Step 3: Cross multiply
    99,679.20x = 149,463.60 × 39,646.80
  4. Step 4: Simplify right side
    99,679.20x = 5,925,753,456.48
  5. Step 5: Solve for x
    x = 5,925,753,456.48/99,679.20
  6. Step 6: Final answer
    x = 59,448.24

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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.