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Finding the Fourth Proportional to 151,542.60, 209,114.52 and 87,873.50

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Solution

The fourth proportional to 151,542.60, 209,114.52 and 87,873.50 is: 121,257.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,542.60 : 209,114.52 = 87,873.50 : x
  2. Step 2: Convert to fraction form
    151,542.60/209,114.52 = 87,873.50/x
  3. Step 3: Cross multiply
    151,542.60x = 209,114.52 × 87,873.50
  4. Step 4: Simplify right side
    151,542.60x = 18,375,624,773.22
  5. Step 5: Solve for x
    x = 18,375,624,773.22/151,542.60
  6. Step 6: Final answer
    x = 121,257.16

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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.