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Finding the Fourth Proportional to 103,805.28, 143,242.68 and 58,468.80

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Solution

The fourth proportional to 103,805.28, 143,242.68 and 58,468.80 is: 80,682.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,805.28 : 143,242.68 = 58,468.80 : x
  2. Step 2: Convert to fraction form
    103,805.28/143,242.68 = 58,468.80/x
  3. Step 3: Cross multiply
    103,805.28x = 143,242.68 × 58,468.80
  4. Step 4: Simplify right side
    103,805.28x = 8,375,227,608.38
  5. Step 5: Solve for x
    x = 8,375,227,608.38/103,805.28
  6. Step 6: Final answer
    x = 80,682.10

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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.