Home / 127,665.60-176,186.88-85,197.12

Finding the Fourth Proportional to 127,665.60, 176,186.88 and 85,197.12

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Solution

The fourth proportional to 127,665.60, 176,186.88 and 85,197.12 is: 117,577.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,665.60 : 176,186.88 = 85,197.12 : x
  2. Step 2: Convert to fraction form
    127,665.60/176,186.88 = 85,197.12/x
  3. Step 3: Cross multiply
    127,665.60x = 176,186.88 × 85,197.12
  4. Step 4: Simplify right side
    127,665.60x = 15,010,614,757.79
  5. Step 5: Solve for x
    x = 15,010,614,757.79/127,665.60
  6. Step 6: Final answer
    x = 117,577.60

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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.