Home / 99,901.20-149,657.40-60,340.80

Finding the Fourth Proportional to 99,901.20, 149,657.40 and 60,340.80

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Solution

The fourth proportional to 99,901.20, 149,657.40 and 60,340.80 is: 90,393.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,901.20 : 149,657.40 = 60,340.80 : x
  2. Step 2: Convert to fraction form
    99,901.20/149,657.40 = 60,340.80/x
  3. Step 3: Cross multiply
    99,901.20x = 149,657.40 × 60,340.80
  4. Step 4: Simplify right side
    99,901.20x = 9,030,447,241.92
  5. Step 5: Solve for x
    x = 9,030,447,241.92/99,901.20
  6. Step 6: Final answer
    x = 90,393.78

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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.