Home / 136,778.04-188,785.18-80,207.64

Finding the Fourth Proportional to 136,778.04, 188,785.18 and 80,207.64

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Solution

The fourth proportional to 136,778.04, 188,785.18 and 80,207.64 is: 110,705.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,778.04 : 188,785.18 = 80,207.64 : x
  2. Step 2: Convert to fraction form
    136,778.04/188,785.18 = 80,207.64/x
  3. Step 3: Cross multiply
    136,778.04x = 188,785.18 × 80,207.64
  4. Step 4: Simplify right side
    136,778.04x = 15,142,013,754.78
  5. Step 5: Solve for x
    x = 15,142,013,754.78/136,778.04
  6. Step 6: Final answer
    x = 110,705.01

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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.