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Finding the Fourth Proportional to 151,417.68, 208,963.44 and 87,775.44

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Solution

The fourth proportional to 151,417.68, 208,963.44 and 87,775.44 is: 121,134.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,417.68 : 208,963.44 = 87,775.44 : x
  2. Step 2: Convert to fraction form
    151,417.68/208,963.44 = 87,775.44/x
  3. Step 3: Cross multiply
    151,417.68x = 208,963.44 × 87,775.44
  4. Step 4: Simplify right side
    151,417.68x = 18,341,857,889.91
  5. Step 5: Solve for x
    x = 18,341,857,889.91/151,417.68
  6. Step 6: Final answer
    x = 121,134.19

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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.