Home / 128,132.64-176,826.96-71,546.40

Finding the Fourth Proportional to 128,132.64, 176,826.96 and 71,546.40

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Solution

The fourth proportional to 128,132.64, 176,826.96 and 71,546.40 is: 98,736.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,132.64 : 176,826.96 = 71,546.40 : x
  2. Step 2: Convert to fraction form
    128,132.64/176,826.96 = 71,546.40/x
  3. Step 3: Cross multiply
    128,132.64x = 176,826.96 × 71,546.40
  4. Step 4: Simplify right side
    128,132.64x = 12,651,332,410.94
  5. Step 5: Solve for x
    x = 12,651,332,410.94/128,132.64
  6. Step 6: Final answer
    x = 98,736.22

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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.