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Finding the Fourth Proportional to 99,474.75, 137,275.20 and 54,762.75

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Solution

The fourth proportional to 99,474.75, 137,275.20 and 54,762.75 is: 75,572.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,474.75 : 137,275.20 = 54,762.75 : x
  2. Step 2: Convert to fraction form
    99,474.75/137,275.20 = 54,762.75/x
  3. Step 3: Cross multiply
    99,474.75x = 137,275.20 × 54,762.75
  4. Step 4: Simplify right side
    99,474.75x = 7,517,567,458.80
  5. Step 5: Solve for x
    x = 7,517,567,458.80/99,474.75
  6. Step 6: Final answer
    x = 75,572.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.