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Finding the Fourth Proportional to 99,766.80, 149,657.40 and 60,238.80

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Solution

The fourth proportional to 99,766.80, 149,657.40 and 60,238.80 is: 90,362.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,766.80 : 149,657.40 = 60,238.80 : x
  2. Step 2: Convert to fraction form
    99,766.80/149,657.40 = 60,238.80/x
  3. Step 3: Cross multiply
    99,766.80x = 149,657.40 × 60,238.80
  4. Step 4: Simplify right side
    99,766.80x = 9,015,182,187.12
  5. Step 5: Solve for x
    x = 9,015,182,187.12/99,766.80
  6. Step 6: Final answer
    x = 90,362.55

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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.