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Finding the Fourth Proportional to 99,490.60, 149,235.90 and 88,604.20

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Solution

The fourth proportional to 99,490.60, 149,235.90 and 88,604.20 is: 132,906.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,490.60 : 149,235.90 = 88,604.20 : x
  2. Step 2: Convert to fraction form
    99,490.60/149,235.90 = 88,604.20/x
  3. Step 3: Cross multiply
    99,490.60x = 149,235.90 × 88,604.20
  4. Step 4: Simplify right side
    99,490.60x = 13,222,927,530.78
  5. Step 5: Solve for x
    x = 13,222,927,530.78/99,490.60
  6. Step 6: Final answer
    x = 132,906.30

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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.