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Finding the Fourth Proportional to 160,228.20, 240,342.30 and 66,721.80

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Solution

The fourth proportional to 160,228.20, 240,342.30 and 66,721.80 is: 100,082.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,228.20 : 240,342.30 = 66,721.80 : x
  2. Step 2: Convert to fraction form
    160,228.20/240,342.30 = 66,721.80/x
  3. Step 3: Cross multiply
    160,228.20x = 240,342.30 × 66,721.80
  4. Step 4: Simplify right side
    160,228.20x = 16,036,070,872.14
  5. Step 5: Solve for x
    x = 16,036,070,872.14/160,228.20
  6. Step 6: Final answer
    x = 100,082.70

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1.5x scale

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.