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Finding the Fourth Proportional to 119,494.40, 179,630.40 and 102,387.20

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Solution

The fourth proportional to 119,494.40, 179,630.40 and 102,387.20 is: 153,913.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,494.40 : 179,630.40 = 102,387.20 : x
  2. Step 2: Convert to fraction form
    119,494.40/179,630.40 = 102,387.20/x
  3. Step 3: Cross multiply
    119,494.40x = 179,630.40 × 102,387.20
  4. Step 4: Simplify right side
    119,494.40x = 18,391,853,690.88
  5. Step 5: Solve for x
    x = 18,391,853,690.88/119,494.40
  6. Step 6: Final answer
    x = 153,913.94

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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.