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Finding the Fourth Proportional to 162,132.80, 242,871.15 and 112,269.20

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Solution

The fourth proportional to 162,132.80, 242,871.15 and 112,269.20 is: 168,176.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,132.80 : 242,871.15 = 112,269.20 : x
  2. Step 2: Convert to fraction form
    162,132.80/242,871.15 = 112,269.20/x
  3. Step 3: Cross multiply
    162,132.80x = 242,871.15 × 112,269.20
  4. Step 4: Simplify right side
    162,132.80x = 27,266,949,713.58
  5. Step 5: Solve for x
    x = 27,266,949,713.58/162,132.80
  6. Step 6: Final answer
    x = 168,176.64

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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.