Home / 128,106.66-192,184.70-39,344.43

Finding the Fourth Proportional to 128,106.66, 192,184.70 and 39,344.43

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Solution

The fourth proportional to 128,106.66, 192,184.70 and 39,344.43 is: 59,024.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,106.66 : 192,184.70 = 39,344.43 : x
  2. Step 2: Convert to fraction form
    128,106.66/192,184.70 = 39,344.43/x
  3. Step 3: Cross multiply
    128,106.66x = 192,184.70 × 39,344.43
  4. Step 4: Simplify right side
    128,106.66x = 7,561,397,279.50
  5. Step 5: Solve for x
    x = 7,561,397,279.50/128,106.66
  6. Step 6: Final answer
    x = 59,024.23

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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.