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Finding the Fourth Proportional to 99,902.80, 149,854.20 and 55,508.32

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Solution

The fourth proportional to 99,902.80, 149,854.20 and 55,508.32 is: 83,262.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,902.80 : 149,854.20 = 55,508.32 : x
  2. Step 2: Convert to fraction form
    99,902.80/149,854.20 = 55,508.32/x
  3. Step 3: Cross multiply
    99,902.80x = 149,854.20 × 55,508.32
  4. Step 4: Simplify right side
    99,902.80x = 8,318,154,886.94
  5. Step 5: Solve for x
    x = 8,318,154,886.94/99,902.80
  6. Step 6: Final answer
    x = 83,262.48

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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.