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Finding the Fourth Proportional to 78,294.44, 108,126.42 and 73,278.92

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Solution

The fourth proportional to 78,294.44, 108,126.42 and 73,278.92 is: 101,199.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,294.44 : 108,126.42 = 73,278.92 : x
  2. Step 2: Convert to fraction form
    78,294.44/108,126.42 = 73,278.92/x
  3. Step 3: Cross multiply
    78,294.44x = 108,126.42 × 73,278.92
  4. Step 4: Simplify right side
    78,294.44x = 7,923,387,281.07
  5. Step 5: Solve for x
    x = 7,923,387,281.07/78,294.44
  6. Step 6: Final answer
    x = 101,199.87

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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.