Home / 136,767.12-188,737.20-80,167.56

Finding the Fourth Proportional to 136,767.12, 188,737.20 and 80,167.56

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Solution

The fourth proportional to 136,767.12, 188,737.20 and 80,167.56 is: 110,630.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,767.12 : 188,737.20 = 80,167.56 : x
  2. Step 2: Convert to fraction form
    136,767.12/188,737.20 = 80,167.56/x
  3. Step 3: Cross multiply
    136,767.12x = 188,737.20 × 80,167.56
  4. Step 4: Simplify right side
    136,767.12x = 15,130,600,805.23
  5. Step 5: Solve for x
    x = 15,130,600,805.23/136,767.12
  6. Step 6: Final answer
    x = 110,630.40

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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.