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Finding the Fourth Proportional to 151,493.76, 209,105.28 and 87,845.76

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Solution

The fourth proportional to 151,493.76, 209,105.28 and 87,845.76 is: 121,252.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,493.76 : 209,105.28 = 87,845.76 : x
  2. Step 2: Convert to fraction form
    151,493.76/209,105.28 = 87,845.76/x
  3. Step 3: Cross multiply
    151,493.76x = 209,105.28 × 87,845.76
  4. Step 4: Simplify right side
    151,493.76x = 18,369,012,241.61
  5. Step 5: Solve for x
    x = 18,369,012,241.61/151,493.76
  6. Step 6: Final answer
    x = 121,252.60

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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.