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Finding the Fourth Proportional to 123,246.65, 170,081.33 and 72,260.70

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Solution

The fourth proportional to 123,246.65, 170,081.33 and 72,260.70 is: 99,720.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,246.65 : 170,081.33 = 72,260.70 : x
  2. Step 2: Convert to fraction form
    123,246.65/170,081.33 = 72,260.70/x
  3. Step 3: Cross multiply
    123,246.65x = 170,081.33 × 72,260.70
  4. Step 4: Simplify right side
    123,246.65x = 12,290,195,962.73
  5. Step 5: Solve for x
    x = 12,290,195,962.73/123,246.65
  6. Step 6: Final answer
    x = 99,720.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.