Home / 123,312.40-170,286.11-90,761.64

Finding the Fourth Proportional to 123,312.40, 170,286.11 and 90,761.64

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Solution

The fourth proportional to 123,312.40, 170,286.11 and 90,761.64 is: 125,335.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,312.40 : 170,286.11 = 90,761.64 : x
  2. Step 2: Convert to fraction form
    123,312.40/170,286.11 = 90,761.64/x
  3. Step 3: Cross multiply
    123,312.40x = 170,286.11 × 90,761.64
  4. Step 4: Simplify right side
    123,312.40x = 15,455,445,733.30
  5. Step 5: Solve for x
    x = 15,455,445,733.30/123,312.40
  6. Step 6: Final answer
    x = 125,335.70

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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.