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Finding the Fourth Proportional to 103,887.80, 143,330.78 and 58,560.20

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Solution

The fourth proportional to 103,887.80, 143,330.78 and 58,560.20 is: 80,793.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,887.80 : 143,330.78 = 58,560.20 : x
  2. Step 2: Convert to fraction form
    103,887.80/143,330.78 = 58,560.20/x
  3. Step 3: Cross multiply
    103,887.80x = 143,330.78 × 58,560.20
  4. Step 4: Simplify right side
    103,887.80x = 8,393,479,142.96
  5. Step 5: Solve for x
    x = 8,393,479,142.96/103,887.80
  6. Step 6: Final answer
    x = 80,793.69

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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.