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Finding the Fourth Proportional to 123,474.48, 170,394.48 and 66,886.80

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Solution

The fourth proportional to 123,474.48, 170,394.48 and 66,886.80 is: 92,303.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,474.48 : 170,394.48 = 66,886.80 : x
  2. Step 2: Convert to fraction form
    123,474.48/170,394.48 = 66,886.80/x
  3. Step 3: Cross multiply
    123,474.48x = 170,394.48 × 66,886.80
  4. Step 4: Simplify right side
    123,474.48x = 11,397,141,504.86
  5. Step 5: Solve for x
    x = 11,397,141,504.86/123,474.48
  6. Step 6: Final answer
    x = 92,303.62

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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.