Home / 136,540.32-188,425.12-76,110.24

Finding the Fourth Proportional to 136,540.32, 188,425.12 and 76,110.24

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Solution

The fourth proportional to 136,540.32, 188,425.12 and 76,110.24 is: 105,031.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,540.32 : 188,425.12 = 76,110.24 : x
  2. Step 2: Convert to fraction form
    136,540.32/188,425.12 = 76,110.24/x
  3. Step 3: Cross multiply
    136,540.32x = 188,425.12 × 76,110.24
  4. Step 4: Simplify right side
    136,540.32x = 14,341,081,105.23
  5. Step 5: Solve for x
    x = 14,341,081,105.23/136,540.32
  6. Step 6: Final answer
    x = 105,031.84

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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.