Home / 136,439.55-188,291.79-79,080.75

Finding the Fourth Proportional to 136,439.55, 188,291.79 and 79,080.75

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Solution

The fourth proportional to 136,439.55, 188,291.79 and 79,080.75 is: 109,134.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,439.55 : 188,291.79 = 79,080.75 : x
  2. Step 2: Convert to fraction form
    136,439.55/188,291.79 = 79,080.75/x
  3. Step 3: Cross multiply
    136,439.55x = 188,291.79 × 79,080.75
  4. Step 4: Simplify right side
    136,439.55x = 14,890,255,972.04
  5. Step 5: Solve for x
    x = 14,890,255,972.04/136,439.55
  6. Step 6: Final answer
    x = 109,134.46

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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.