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Finding the Fourth Proportional to 143,479.98, 215,115.48 and 67,552.20

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Solution

The fourth proportional to 143,479.98, 215,115.48 and 67,552.20 is: 101,279.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,479.98 : 215,115.48 = 67,552.20 : x
  2. Step 2: Convert to fraction form
    143,479.98/215,115.48 = 67,552.20/x
  3. Step 3: Cross multiply
    143,479.98x = 215,115.48 × 67,552.20
  4. Step 4: Simplify right side
    143,479.98x = 14,531,523,928.06
  5. Step 5: Solve for x
    x = 14,531,523,928.06/143,479.98
  6. Step 6: Final answer
    x = 101,279.10

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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.