Home / 136,079.32-187,881.10-121,694.52

Finding the Fourth Proportional to 136,079.32, 187,881.10 and 121,694.52

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Solution

The fourth proportional to 136,079.32, 187,881.10 and 121,694.52 is: 168,020.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,079.32 : 187,881.10 = 121,694.52 : x
  2. Step 2: Convert to fraction form
    136,079.32/187,881.10 = 121,694.52/x
  3. Step 3: Cross multiply
    136,079.32x = 187,881.10 × 121,694.52
  4. Step 4: Simplify right side
    136,079.32x = 22,864,100,281.57
  5. Step 5: Solve for x
    x = 22,864,100,281.57/136,079.32
  6. Step 6: Final answer
    x = 168,020.39

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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.