Home / 123,239.80-170,069.96-66,651.18

Finding the Fourth Proportional to 123,239.80, 170,069.96 and 66,651.18

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Solution

The fourth proportional to 123,239.80, 170,069.96 and 66,651.18 is: 91,978.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,239.80 : 170,069.96 = 66,651.18 : x
  2. Step 2: Convert to fraction form
    123,239.80/170,069.96 = 66,651.18/x
  3. Step 3: Cross multiply
    123,239.80x = 170,069.96 × 66,651.18
  4. Step 4: Simplify right side
    123,239.80x = 11,335,363,516.55
  5. Step 5: Solve for x
    x = 11,335,363,516.55/123,239.80
  6. Step 6: Final answer
    x = 91,978.11

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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.