Home / 143,618.76-215,287.20-80,469.18

Finding the Fourth Proportional to 143,618.76, 215,287.20 and 80,469.18

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Solution

The fourth proportional to 143,618.76, 215,287.20 and 80,469.18 is: 120,624.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,618.76 : 215,287.20 = 80,469.18 : x
  2. Step 2: Convert to fraction form
    143,618.76/215,287.20 = 80,469.18/x
  3. Step 3: Cross multiply
    143,618.76x = 215,287.20 × 80,469.18
  4. Step 4: Simplify right side
    143,618.76x = 17,323,984,448.50
  5. Step 5: Solve for x
    x = 17,323,984,448.50/143,618.76
  6. Step 6: Final answer
    x = 120,624.80

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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.