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Finding the Fourth Proportional to 143,471.76, 215,115.33 and 68,590.23

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Solution

The fourth proportional to 143,471.76, 215,115.33 and 68,590.23 is: 102,841.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,471.76 : 215,115.33 = 68,590.23 : x
  2. Step 2: Convert to fraction form
    143,471.76/215,115.33 = 68,590.23/x
  3. Step 3: Cross multiply
    143,471.76x = 215,115.33 × 68,590.23
  4. Step 4: Simplify right side
    143,471.76x = 14,754,809,961.23
  5. Step 5: Solve for x
    x = 14,754,809,961.23/143,471.76
  6. Step 6: Final answer
    x = 102,841.21

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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.