Home / 123,326.08-170,171.74-72,319.57

Finding the Fourth Proportional to 123,326.08, 170,171.74 and 72,319.57

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Solution

The fourth proportional to 123,326.08, 170,171.74 and 72,319.57 is: 99,790.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,326.08 : 170,171.74 = 72,319.57 : x
  2. Step 2: Convert to fraction form
    123,326.08/170,171.74 = 72,319.57/x
  3. Step 3: Cross multiply
    123,326.08x = 170,171.74 × 72,319.57
  4. Step 4: Simplify right side
    123,326.08x = 12,306,747,062.95
  5. Step 5: Solve for x
    x = 12,306,747,062.95/123,326.08
  6. Step 6: Final answer
    x = 99,790.30

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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.