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Finding the Fourth Proportional to 99,446.40, 148,910.40 and 64,195.20

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Solution

The fourth proportional to 99,446.40, 148,910.40 and 64,195.20 is: 96,125.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,446.40 : 148,910.40 = 64,195.20 : x
  2. Step 2: Convert to fraction form
    99,446.40/148,910.40 = 64,195.20/x
  3. Step 3: Cross multiply
    99,446.40x = 148,910.40 × 64,195.20
  4. Step 4: Simplify right side
    99,446.40x = 9,559,332,910.08
  5. Step 5: Solve for x
    x = 9,559,332,910.08/99,446.40
  6. Step 6: Final answer
    x = 96,125.48

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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.