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Finding the Fourth Proportional to 159,532.65, 220,154.60 and 87,912.65

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Solution

The fourth proportional to 159,532.65, 220,154.60 and 87,912.65 is: 121,319.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,532.65 : 220,154.60 = 87,912.65 : x
  2. Step 2: Convert to fraction form
    159,532.65/220,154.60 = 87,912.65/x
  3. Step 3: Cross multiply
    159,532.65x = 220,154.60 × 87,912.65
  4. Step 4: Simplify right side
    159,532.65x = 19,354,375,065.86
  5. Step 5: Solve for x
    x = 19,354,375,065.86/159,532.65
  6. Step 6: Final answer
    x = 121,319.21

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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.