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Finding the Fourth Proportional to 151,346.00, 208,894.44 and 87,720.71

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Solution

The fourth proportional to 151,346.00, 208,894.44 and 87,720.71 is: 121,076.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,346.00 : 208,894.44 = 87,720.71 : x
  2. Step 2: Convert to fraction form
    151,346.00/208,894.44 = 87,720.71/x
  3. Step 3: Cross multiply
    151,346.00x = 208,894.44 × 87,720.71
  4. Step 4: Simplify right side
    151,346.00x = 18,324,367,876.33
  5. Step 5: Solve for x
    x = 18,324,367,876.33/151,346.00
  6. Step 6: Final answer
    x = 121,076.00

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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.