Home / 127,789.78-176,351.10-70,431.16

Finding the Fourth Proportional to 127,789.78, 176,351.10 and 70,431.16

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Solution

The fourth proportional to 127,789.78, 176,351.10 and 70,431.16 is: 97,195.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,789.78 : 176,351.10 = 70,431.16 : x
  2. Step 2: Convert to fraction form
    127,789.78/176,351.10 = 70,431.16/x
  3. Step 3: Cross multiply
    127,789.78x = 176,351.10 × 70,431.16
  4. Step 4: Simplify right side
    127,789.78x = 12,420,612,540.28
  5. Step 5: Solve for x
    x = 12,420,612,540.28/127,789.78
  6. Step 6: Final answer
    x = 97,195.66

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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.