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Finding the Fourth Proportional to 100,819.60, 151,229.40 and 99,264.40

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Solution

The fourth proportional to 100,819.60, 151,229.40 and 99,264.40 is: 148,896.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,819.60 : 151,229.40 = 99,264.40 : x
  2. Step 2: Convert to fraction form
    100,819.60/151,229.40 = 99,264.40/x
  3. Step 3: Cross multiply
    100,819.60x = 151,229.40 × 99,264.40
  4. Step 4: Simplify right side
    100,819.60x = 15,011,695,653.36
  5. Step 5: Solve for x
    x = 15,011,695,653.36/100,819.60
  6. Step 6: Final answer
    x = 148,896.60

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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.