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Finding the Fourth Proportional to 99,750.60, 149,496.30 and 72,016.20

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Solution

The fourth proportional to 99,750.60, 149,496.30 and 72,016.20 is: 107,930.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,750.60 : 149,496.30 = 72,016.20 : x
  2. Step 2: Convert to fraction form
    99,750.60/149,496.30 = 72,016.20/x
  3. Step 3: Cross multiply
    99,750.60x = 149,496.30 × 72,016.20
  4. Step 4: Simplify right side
    99,750.60x = 10,766,155,440.06
  5. Step 5: Solve for x
    x = 10,766,155,440.06/99,750.60
  6. Step 6: Final answer
    x = 107,930.73

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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.