Home / 127,716.78-176,254.63-71,128.16

Finding the Fourth Proportional to 127,716.78, 176,254.63 and 71,128.16

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Solution

The fourth proportional to 127,716.78, 176,254.63 and 71,128.16 is: 98,159.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,716.78 : 176,254.63 = 71,128.16 : x
  2. Step 2: Convert to fraction form
    127,716.78/176,254.63 = 71,128.16/x
  3. Step 3: Cross multiply
    127,716.78x = 176,254.63 × 71,128.16
  4. Step 4: Simplify right side
    127,716.78x = 12,536,667,523.38
  5. Step 5: Solve for x
    x = 12,536,667,523.38/127,716.78
  6. Step 6: Final answer
    x = 98,159.91

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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.