Home / 128,288.02-177,034.41-71,704.66

Finding the Fourth Proportional to 128,288.02, 177,034.41 and 71,704.66

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Solution

The fourth proportional to 128,288.02, 177,034.41 and 71,704.66 is: 98,950.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,288.02 : 177,034.41 = 71,704.66 : x
  2. Step 2: Convert to fraction form
    128,288.02/177,034.41 = 71,704.66/x
  3. Step 3: Cross multiply
    128,288.02x = 177,034.41 × 71,704.66
  4. Step 4: Simplify right side
    128,288.02x = 12,694,192,177.35
  5. Step 5: Solve for x
    x = 12,694,192,177.35/128,288.02
  6. Step 6: Final answer
    x = 98,950.72

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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.