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Finding the Fourth Proportional to 102,031.20, 153,046.80 and 73,818.90

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Solution

The fourth proportional to 102,031.20, 153,046.80 and 73,818.90 is: 110,728.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,031.20 : 153,046.80 = 73,818.90 : x
  2. Step 2: Convert to fraction form
    102,031.20/153,046.80 = 73,818.90/x
  3. Step 3: Cross multiply
    102,031.20x = 153,046.80 × 73,818.90
  4. Step 4: Simplify right side
    102,031.20x = 11,297,746,424.52
  5. Step 5: Solve for x
    x = 11,297,746,424.52/102,031.20
  6. Step 6: Final answer
    x = 110,728.35

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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.