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Finding the Fourth Proportional to 99,372.80, 149,059.20 and 60,006.80

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Solution

The fourth proportional to 99,372.80, 149,059.20 and 60,006.80 is: 90,010.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,372.80 : 149,059.20 = 60,006.80 : x
  2. Step 2: Convert to fraction form
    99,372.80/149,059.20 = 60,006.80/x
  3. Step 3: Cross multiply
    99,372.80x = 149,059.20 × 60,006.80
  4. Step 4: Simplify right side
    99,372.80x = 8,944,565,602.56
  5. Step 5: Solve for x
    x = 8,944,565,602.56/99,372.80
  6. Step 6: Final answer
    x = 90,010.20

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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.