Home / 123,219.80-170,043.12-66,631.04

Finding the Fourth Proportional to 123,219.80, 170,043.12 and 66,631.04

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Solution

The fourth proportional to 123,219.80, 170,043.12 and 66,631.04 is: 91,950.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,219.80 : 170,043.12 = 66,631.04 : x
  2. Step 2: Convert to fraction form
    123,219.80/170,043.12 = 66,631.04/x
  3. Step 3: Cross multiply
    123,219.80x = 170,043.12 × 66,631.04
  4. Step 4: Simplify right side
    123,219.80x = 11,330,149,930.44
  5. Step 5: Solve for x
    x = 11,330,149,930.44/123,219.80
  6. Step 6: Final answer
    x = 91,950.72

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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.