Home / 136,549.94-188,439.64-76,120.70

Finding the Fourth Proportional to 136,549.94, 188,439.64 and 76,120.70

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Solution

The fourth proportional to 136,549.94, 188,439.64 and 76,120.70 is: 105,046.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,549.94 : 188,439.64 = 76,120.70 : x
  2. Step 2: Convert to fraction form
    136,549.94/188,439.64 = 76,120.70/x
  3. Step 3: Cross multiply
    136,549.94x = 188,439.64 × 76,120.70
  4. Step 4: Simplify right side
    136,549.94x = 14,344,157,585.35
  5. Step 5: Solve for x
    x = 14,344,157,585.35/136,549.94
  6. Step 6: Final answer
    x = 105,046.97

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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.