Home / 99,818.60-149,727.90-89,977.10

Finding the Fourth Proportional to 99,818.60, 149,727.90 and 89,977.10

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Solution

The fourth proportional to 99,818.60, 149,727.90 and 89,977.10 is: 134,965.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,818.60 : 149,727.90 = 89,977.10 : x
  2. Step 2: Convert to fraction form
    99,818.60/149,727.90 = 89,977.10/x
  3. Step 3: Cross multiply
    99,818.60x = 149,727.90 × 89,977.10
  4. Step 4: Simplify right side
    99,818.60x = 13,472,082,231.09
  5. Step 5: Solve for x
    x = 13,472,082,231.09/99,818.60
  6. Step 6: Final answer
    x = 134,965.65

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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.