Home / 136,956.10-205,304.55-80,839.30

Finding the Fourth Proportional to 136,956.10, 205,304.55 and 80,839.30

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Solution

The fourth proportional to 136,956.10, 205,304.55 and 80,839.30 is: 121,182.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,956.10 : 205,304.55 = 80,839.30 : x
  2. Step 2: Convert to fraction form
    136,956.10/205,304.55 = 80,839.30/x
  3. Step 3: Cross multiply
    136,956.10x = 205,304.55 × 80,839.30
  4. Step 4: Simplify right side
    136,956.10x = 16,596,676,108.82
  5. Step 5: Solve for x
    x = 16,596,676,108.82/136,956.10
  6. Step 6: Final answer
    x = 121,182.45

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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.