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Finding the Fourth Proportional to 99,618.60, 149,296.70 and 73,199.40

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Solution

The fourth proportional to 99,618.60, 149,296.70 and 73,199.40 is: 109,702.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,618.60 : 149,296.70 = 73,199.40 : x
  2. Step 2: Convert to fraction form
    99,618.60/149,296.70 = 73,199.40/x
  3. Step 3: Cross multiply
    99,618.60x = 149,296.70 × 73,199.40
  4. Step 4: Simplify right side
    99,618.60x = 10,928,428,861.98
  5. Step 5: Solve for x
    x = 10,928,428,861.98/99,618.60
  6. Step 6: Final answer
    x = 109,702.69

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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.