Home / 128,046.24-176,703.84-71,456.40

Finding the Fourth Proportional to 128,046.24, 176,703.84 and 71,456.40

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Solution

The fourth proportional to 128,046.24, 176,703.84 and 71,456.40 is: 98,609.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,046.24 : 176,703.84 = 71,456.40 : x
  2. Step 2: Convert to fraction form
    128,046.24/176,703.84 = 71,456.40/x
  3. Step 3: Cross multiply
    128,046.24x = 176,703.84 × 71,456.40
  4. Step 4: Simplify right side
    128,046.24x = 12,626,620,272.58
  5. Step 5: Solve for x
    x = 12,626,620,272.58/128,046.24
  6. Step 6: Final answer
    x = 98,609.85

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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.