Home / 123,344.31-170,215.16-66,755.69

Finding the Fourth Proportional to 123,344.31, 170,215.16 and 66,755.69

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Solution

The fourth proportional to 123,344.31, 170,215.16 and 66,755.69 is: 92,122.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,344.31 : 170,215.16 = 66,755.69 : x
  2. Step 2: Convert to fraction form
    123,344.31/170,215.16 = 66,755.69/x
  3. Step 3: Cross multiply
    123,344.31x = 170,215.16 × 66,755.69
  4. Step 4: Simplify right side
    123,344.31x = 11,362,829,907.71
  5. Step 5: Solve for x
    x = 11,362,829,907.71/123,344.31
  6. Step 6: Final answer
    x = 92,122.85

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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.