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Finding the Fourth Proportional to 99,809.10, 149,713.65 and 89,967.60

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Solution

The fourth proportional to 99,809.10, 149,713.65 and 89,967.60 is: 134,951.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,809.10 : 149,713.65 = 89,967.60 : x
  2. Step 2: Convert to fraction form
    99,809.10/149,713.65 = 89,967.60/x
  3. Step 3: Cross multiply
    99,809.10x = 149,713.65 × 89,967.60
  4. Step 4: Simplify right side
    99,809.10x = 13,469,377,777.74
  5. Step 5: Solve for x
    x = 13,469,377,777.74/99,809.10
  6. Step 6: Final answer
    x = 134,951.40

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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.