Home / 123,276.42-170,120.25-66,686.58

Finding the Fourth Proportional to 123,276.42, 170,120.25 and 66,686.58

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Solution

The fourth proportional to 123,276.42, 170,120.25 and 66,686.58 is: 92,026.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,276.42 : 170,120.25 = 66,686.58 : x
  2. Step 2: Convert to fraction form
    123,276.42/170,120.25 = 66,686.58/x
  3. Step 3: Cross multiply
    123,276.42x = 170,120.25 × 66,686.58
  4. Step 4: Simplify right side
    123,276.42x = 11,344,737,661.25
  5. Step 5: Solve for x
    x = 11,344,737,661.25/123,276.42
  6. Step 6: Final answer
    x = 92,026.83

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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.