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Finding the Fourth Proportional to 128,227.60, 192,571.80 and 124,080.40

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Solution

The fourth proportional to 128,227.60, 192,571.80 and 124,080.40 is: 186,343.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,227.60 : 192,571.80 = 124,080.40 : x
  2. Step 2: Convert to fraction form
    128,227.60/192,571.80 = 124,080.40/x
  3. Step 3: Cross multiply
    128,227.60x = 192,571.80 × 124,080.40
  4. Step 4: Simplify right side
    128,227.60x = 23,894,385,972.72
  5. Step 5: Solve for x
    x = 23,894,385,972.72/128,227.60
  6. Step 6: Final answer
    x = 186,343.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.