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Finding the Fourth Proportional to 123,412.56, 170,310.48 and 66,825.12

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Solution

The fourth proportional to 123,412.56, 170,310.48 and 66,825.12 is: 92,219.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,412.56 : 170,310.48 = 66,825.12 : x
  2. Step 2: Convert to fraction form
    123,412.56/170,310.48 = 66,825.12/x
  3. Step 3: Cross multiply
    123,412.56x = 170,310.48 × 66,825.12
  4. Step 4: Simplify right side
    123,412.56x = 11,381,018,263.26
  5. Step 5: Solve for x
    x = 11,381,018,263.26/123,412.56
  6. Step 6: Final answer
    x = 92,219.29

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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.