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Finding the Fourth Proportional to 151,394.48, 208,924.48 and 87,769.20

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Solution

The fourth proportional to 151,394.48, 208,924.48 and 87,769.20 is: 121,121.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,394.48 : 208,924.48 = 87,769.20 : x
  2. Step 2: Convert to fraction form
    151,394.48/208,924.48 = 87,769.20/x
  3. Step 3: Cross multiply
    151,394.48x = 208,924.48 × 87,769.20
  4. Step 4: Simplify right side
    151,394.48x = 18,337,134,470.02
  5. Step 5: Solve for x
    x = 18,337,134,470.02/151,394.48
  6. Step 6: Final answer
    x = 121,121.55

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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.