Home / 127,719.28-176,258.09-71,130.66

Finding the Fourth Proportional to 127,719.28, 176,258.09 and 71,130.66

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Solution

The fourth proportional to 127,719.28, 176,258.09 and 71,130.66 is: 98,163.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,719.28 : 176,258.09 = 71,130.66 : x
  2. Step 2: Convert to fraction form
    127,719.28/176,258.09 = 71,130.66/x
  3. Step 3: Cross multiply
    127,719.28x = 176,258.09 × 71,130.66
  4. Step 4: Simplify right side
    127,719.28x = 12,537,353,788.90
  5. Step 5: Solve for x
    x = 12,537,353,788.90/127,719.28
  6. Step 6: Final answer
    x = 98,163.36

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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.