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Finding the Fourth Proportional to 99,724.80, 149,512.80 and 60,273.60

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Solution

The fourth proportional to 99,724.80, 149,512.80 and 60,273.60 is: 90,365.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,724.80 : 149,512.80 = 60,273.60 : x
  2. Step 2: Convert to fraction form
    99,724.80/149,512.80 = 60,273.60/x
  3. Step 3: Cross multiply
    99,724.80x = 149,512.80 × 60,273.60
  4. Step 4: Simplify right side
    99,724.80x = 9,011,674,702.08
  5. Step 5: Solve for x
    x = 9,011,674,702.08/99,724.80
  6. Step 6: Final answer
    x = 90,365.43

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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.