Home / 123,531.12-170,472.94-66,942.50

Finding the Fourth Proportional to 123,531.12, 170,472.94 and 66,942.50

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Solution

The fourth proportional to 123,531.12, 170,472.94 and 66,942.50 is: 92,380.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,531.12 : 170,472.94 = 66,942.50 : x
  2. Step 2: Convert to fraction form
    123,531.12/170,472.94 = 66,942.50/x
  3. Step 3: Cross multiply
    123,531.12x = 170,472.94 × 66,942.50
  4. Step 4: Simplify right side
    123,531.12x = 11,411,883,766.23
  5. Step 5: Solve for x
    x = 11,411,883,766.23/123,531.12
  6. Step 6: Final answer
    x = 92,380.64

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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.