Home / 128,527.55-177,342.82-80,753.22

Finding the Fourth Proportional to 128,527.55, 177,342.82 and 80,753.22

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Solution

The fourth proportional to 128,527.55, 177,342.82 and 80,753.22 is: 111,423.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,527.55 : 177,342.82 = 80,753.22 : x
  2. Step 2: Convert to fraction form
    128,527.55/177,342.82 = 80,753.22/x
  3. Step 3: Cross multiply
    128,527.55x = 177,342.82 × 80,753.22
  4. Step 4: Simplify right side
    128,527.55x = 14,321,003,355.11
  5. Step 5: Solve for x
    x = 14,321,003,355.11/128,527.55
  6. Step 6: Final answer
    x = 111,423.61

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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.