Home / 147,123.20-220,166.40-102,540.80

Finding the Fourth Proportional to 147,123.20, 220,166.40 and 102,540.80

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Solution

The fourth proportional to 147,123.20, 220,166.40 and 102,540.80 is: 153,449.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,123.20 : 220,166.40 = 102,540.80 : x
  2. Step 2: Convert to fraction form
    147,123.20/220,166.40 = 102,540.80/x
  3. Step 3: Cross multiply
    147,123.20x = 220,166.40 × 102,540.80
  4. Step 4: Simplify right side
    147,123.20x = 22,576,038,789.12
  5. Step 5: Solve for x
    x = 22,576,038,789.12/147,123.20
  6. Step 6: Final answer
    x = 153,449.89

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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.