Home / 123,312.34-170,171.19-66,723.72

Finding the Fourth Proportional to 123,312.34, 170,171.19 and 66,723.72

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Solution

The fourth proportional to 123,312.34, 170,171.19 and 66,723.72 is: 92,078.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,312.34 : 170,171.19 = 66,723.72 : x
  2. Step 2: Convert to fraction form
    123,312.34/170,171.19 = 66,723.72/x
  3. Step 3: Cross multiply
    123,312.34x = 170,171.19 × 66,723.72
  4. Step 4: Simplify right side
    123,312.34x = 11,354,454,833.63
  5. Step 5: Solve for x
    x = 11,354,454,833.63/123,312.34
  6. Step 6: Final answer
    x = 92,078.82

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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.