Home / 123,380.08-170,264.88-66,791.32

Finding the Fourth Proportional to 123,380.08, 170,264.88 and 66,791.32

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Solution

The fourth proportional to 123,380.08, 170,264.88 and 66,791.32 is: 92,172.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,380.08 : 170,264.88 = 66,791.32 : x
  2. Step 2: Convert to fraction form
    123,380.08/170,264.88 = 66,791.32/x
  3. Step 3: Cross multiply
    123,380.08x = 170,264.88 × 66,791.32
  4. Step 4: Simplify right side
    123,380.08x = 11,372,216,084.84
  5. Step 5: Solve for x
    x = 11,372,216,084.84/123,380.08
  6. Step 6: Final answer
    x = 92,172.22

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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.