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Finding the Fourth Proportional to 147,081.20, 220,103.40 and 102,498.80

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Solution

The fourth proportional to 147,081.20, 220,103.40 and 102,498.80 is: 153,386.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,081.20 : 220,103.40 = 102,498.80 : x
  2. Step 2: Convert to fraction form
    147,081.20/220,103.40 = 102,498.80/x
  3. Step 3: Cross multiply
    147,081.20x = 220,103.40 × 102,498.80
  4. Step 4: Simplify right side
    147,081.20x = 22,560,334,375.92
  5. Step 5: Solve for x
    x = 22,560,334,375.92/147,081.20
  6. Step 6: Final answer
    x = 153,386.93

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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.