Home / 112,123.31-154,767.65-66,815.51

Finding the Fourth Proportional to 112,123.31, 154,767.65 and 66,815.51

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Solution

The fourth proportional to 112,123.31, 154,767.65 and 66,815.51 is: 92,227.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,123.31 : 154,767.65 = 66,815.51 : x
  2. Step 2: Convert to fraction form
    112,123.31/154,767.65 = 66,815.51/x
  3. Step 3: Cross multiply
    112,123.31x = 154,767.65 × 66,815.51
  4. Step 4: Simplify right side
    112,123.31x = 10,340,878,358.34
  5. Step 5: Solve for x
    x = 10,340,878,358.34/112,123.31
  6. Step 6: Final answer
    x = 92,227.73

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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.