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Finding the Fourth Proportional to 136,687.01, 188,630.91 and 76,260.20

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Solution

The fourth proportional to 136,687.01, 188,630.91 and 76,260.20 is: 105,240.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,687.01 : 188,630.91 = 76,260.20 : x
  2. Step 2: Convert to fraction form
    136,687.01/188,630.91 = 76,260.20/x
  3. Step 3: Cross multiply
    136,687.01x = 188,630.91 × 76,260.20
  4. Step 4: Simplify right side
    136,687.01x = 14,385,029,979.63
  5. Step 5: Solve for x
    x = 14,385,029,979.63/136,687.01
  6. Step 6: Final answer
    x = 105,240.66

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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.