Home / 128,655.74-177,524.26-80,875.26

Finding the Fourth Proportional to 128,655.74, 177,524.26 and 80,875.26

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Solution

The fourth proportional to 128,655.74, 177,524.26 and 80,875.26 is: 111,594.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,655.74 : 177,524.26 = 80,875.26 : x
  2. Step 2: Convert to fraction form
    128,655.74/177,524.26 = 80,875.26/x
  3. Step 3: Cross multiply
    128,655.74x = 177,524.26 × 80,875.26
  4. Step 4: Simplify right side
    128,655.74x = 14,357,320,481.62
  5. Step 5: Solve for x
    x = 14,357,320,481.62/128,655.74
  6. Step 6: Final answer
    x = 111,594.87

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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.