Home / 112,123.41-154,767.80-66,815.61

Finding the Fourth Proportional to 112,123.41, 154,767.80 and 66,815.61

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Solution

The fourth proportional to 112,123.41, 154,767.80 and 66,815.61 is: 92,227.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,123.41 : 154,767.80 = 66,815.61 : x
  2. Step 2: Convert to fraction form
    112,123.41/154,767.80 = 66,815.61/x
  3. Step 3: Cross multiply
    112,123.41x = 154,767.80 × 66,815.61
  4. Step 4: Simplify right side
    112,123.41x = 10,340,904,965.36
  5. Step 5: Solve for x
    x = 10,340,904,965.36/112,123.41
  6. Step 6: Final answer
    x = 92,227.89

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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.