Home / 140,781.17-194,278.04-77,121.23

Finding the Fourth Proportional to 140,781.17, 194,278.04 and 77,121.23

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Solution

The fourth proportional to 140,781.17, 194,278.04 and 77,121.23 is: 106,427.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,781.17 : 194,278.04 = 77,121.23 : x
  2. Step 2: Convert to fraction form
    140,781.17/194,278.04 = 77,121.23/x
  3. Step 3: Cross multiply
    140,781.17x = 194,278.04 × 77,121.23
  4. Step 4: Simplify right side
    140,781.17x = 14,982,961,406.79
  5. Step 5: Solve for x
    x = 14,982,961,406.79/140,781.17
  6. Step 6: Final answer
    x = 106,427.31

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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.