Home / 128,532.56-177,381.72-80,768.24

Finding the Fourth Proportional to 128,532.56, 177,381.72 and 80,768.24

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Solution

The fourth proportional to 128,532.56, 177,381.72 and 80,768.24 is: 111,464.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,532.56 : 177,381.72 = 80,768.24 : x
  2. Step 2: Convert to fraction form
    128,532.56/177,381.72 = 80,768.24/x
  3. Step 3: Cross multiply
    128,532.56x = 177,381.72 × 80,768.24
  4. Step 4: Simplify right side
    128,532.56x = 14,326,809,332.57
  5. Step 5: Solve for x
    x = 14,326,809,332.57/128,532.56
  6. Step 6: Final answer
    x = 111,464.44

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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.