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Finding the Fourth Proportional to 129,560.88, 177,628.62 and 127,199.28

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Solution

The fourth proportional to 129,560.88, 177,628.62 and 127,199.28 is: 174,390.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,560.88 : 177,628.62 = 127,199.28 : x
  2. Step 2: Convert to fraction form
    129,560.88/177,628.62 = 127,199.28/x
  3. Step 3: Cross multiply
    129,560.88x = 177,628.62 × 127,199.28
  4. Step 4: Simplify right side
    129,560.88x = 22,594,232,571.39
  5. Step 5: Solve for x
    x = 22,594,232,571.39/129,560.88
  6. Step 6: Final answer
    x = 174,390.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.