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Finding the Fourth Proportional to 123,470.98, 170,389.65 and 66,883.30

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Solution

The fourth proportional to 123,470.98, 170,389.65 and 66,883.30 is: 92,298.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,470.98 : 170,389.65 = 66,883.30 : x
  2. Step 2: Convert to fraction form
    123,470.98/170,389.65 = 66,883.30/x
  3. Step 3: Cross multiply
    123,470.98x = 170,389.65 × 66,883.30
  4. Step 4: Simplify right side
    123,470.98x = 11,396,222,077.85
  5. Step 5: Solve for x
    x = 11,396,222,077.85/123,470.98
  6. Step 6: Final answer
    x = 92,298.79

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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.