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Finding the Fourth Proportional to 133,158.60, 183,759.87 and 72,728.15

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Solution

The fourth proportional to 133,158.60, 183,759.87 and 72,728.15 is: 100,365.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,158.60 : 183,759.87 = 72,728.15 : x
  2. Step 2: Convert to fraction form
    133,158.60/183,759.87 = 72,728.15/x
  3. Step 3: Cross multiply
    133,158.60x = 183,759.87 × 72,728.15
  4. Step 4: Simplify right side
    133,158.60x = 13,364,514,743.27
  5. Step 5: Solve for x
    x = 13,364,514,743.27/133,158.60
  6. Step 6: Final answer
    x = 100,365.39

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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.