Home / 123,150.38-169,947.72-66,561.75

Finding the Fourth Proportional to 123,150.38, 169,947.72 and 66,561.75

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Solution

The fourth proportional to 123,150.38, 169,947.72 and 66,561.75 is: 91,855.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,150.38 : 169,947.72 = 66,561.75 : x
  2. Step 2: Convert to fraction form
    123,150.38/169,947.72 = 66,561.75/x
  3. Step 3: Cross multiply
    123,150.38x = 169,947.72 × 66,561.75
  4. Step 4: Simplify right side
    123,150.38x = 11,312,017,651.71
  5. Step 5: Solve for x
    x = 11,312,017,651.71/123,150.38
  6. Step 6: Final answer
    x = 91,855.32

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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.