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Finding the Fourth Proportional to 161,448.88, 242,227.76 and 71,479.20

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Solution

The fourth proportional to 161,448.88, 242,227.76 and 71,479.20 is: 107,242.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,448.88 : 242,227.76 = 71,479.20 : x
  2. Step 2: Convert to fraction form
    161,448.88/242,227.76 = 71,479.20/x
  3. Step 3: Cross multiply
    161,448.88x = 242,227.76 × 71,479.20
  4. Step 4: Simplify right side
    161,448.88x = 17,314,246,502.59
  5. Step 5: Solve for x
    x = 17,314,246,502.59/161,448.88
  6. Step 6: Final answer
    x = 107,242.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.