Home / 128,552.62-177,381.51-80,772.13

Finding the Fourth Proportional to 128,552.62, 177,381.51 and 80,772.13

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Solution

The fourth proportional to 128,552.62, 177,381.51 and 80,772.13 is: 111,452.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,552.62 : 177,381.51 = 80,772.13 : x
  2. Step 2: Convert to fraction form
    128,552.62/177,381.51 = 80,772.13/x
  3. Step 3: Cross multiply
    128,552.62x = 177,381.51 × 80,772.13
  4. Step 4: Simplify right side
    128,552.62x = 14,327,482,385.32
  5. Step 5: Solve for x
    x = 14,327,482,385.32/128,552.62
  6. Step 6: Final answer
    x = 111,452.28

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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.