Home / 128,134.25-176,825.24-74,422.73

Finding the Fourth Proportional to 128,134.25, 176,825.24 and 74,422.73

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Solution

The fourth proportional to 128,134.25, 176,825.24 and 74,422.73 is: 102,703.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,134.25 : 176,825.24 = 74,422.73 : x
  2. Step 2: Convert to fraction form
    128,134.25/176,825.24 = 74,422.73/x
  3. Step 3: Cross multiply
    128,134.25x = 176,825.24 × 74,422.73
  4. Step 4: Simplify right side
    128,134.25x = 13,159,816,395.64
  5. Step 5: Solve for x
    x = 13,159,816,395.64/128,134.25
  6. Step 6: Final answer
    x = 102,703.35

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Double scale
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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.