Home / 128,532.48-177,385.92-71,943.04

Finding the Fourth Proportional to 128,532.48, 177,385.92 and 71,943.04

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Solution

The fourth proportional to 128,532.48, 177,385.92 and 71,943.04 is: 99,287.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,532.48 : 177,385.92 = 71,943.04 : x
  2. Step 2: Convert to fraction form
    128,532.48/177,385.92 = 71,943.04/x
  3. Step 3: Cross multiply
    128,532.48x = 177,385.92 × 71,943.04
  4. Step 4: Simplify right side
    128,532.48x = 12,761,682,338.00
  5. Step 5: Solve for x
    x = 12,761,682,338.00/128,532.48
  6. Step 6: Final answer
    x = 99,287.61

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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.