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Finding the Fourth Proportional to 128,908.52, 177,926.46 and 88,089.17

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Solution

The fourth proportional to 128,908.52, 177,926.46 and 88,089.17 is: 121,585.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,908.52 : 177,926.46 = 88,089.17 : x
  2. Step 2: Convert to fraction form
    128,908.52/177,926.46 = 88,089.17/x
  3. Step 3: Cross multiply
    128,908.52x = 177,926.46 × 88,089.17
  4. Step 4: Simplify right side
    128,908.52x = 15,673,394,182.44
  5. Step 5: Solve for x
    x = 15,673,394,182.44/128,908.52
  6. Step 6: Final answer
    x = 121,585.40

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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.