Home / 128,956.27-177,951.66-71,592.25

Finding the Fourth Proportional to 128,956.27, 177,951.66 and 71,592.25

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Solution

The fourth proportional to 128,956.27, 177,951.66 and 71,592.25 is: 98,792.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,956.27 : 177,951.66 = 71,592.25 : x
  2. Step 2: Convert to fraction form
    128,956.27/177,951.66 = 71,592.25/x
  3. Step 3: Cross multiply
    128,956.27x = 177,951.66 × 71,592.25
  4. Step 4: Simplify right side
    128,956.27x = 12,739,959,730.64
  5. Step 5: Solve for x
    x = 12,739,959,730.64/128,956.27
  6. Step 6: Final answer
    x = 98,792.87

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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.