Home / 126,570.38-189,855.77-51,690.53

Finding the Fourth Proportional to 126,570.38, 189,855.77 and 51,690.53

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Solution

The fourth proportional to 126,570.38, 189,855.77 and 51,690.53 is: 77,535.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,570.38 : 189,855.77 = 51,690.53 : x
  2. Step 2: Convert to fraction form
    126,570.38/189,855.77 = 51,690.53/x
  3. Step 3: Cross multiply
    126,570.38x = 189,855.77 × 51,690.53
  4. Step 4: Simplify right side
    126,570.38x = 9,813,744,167.13
  5. Step 5: Solve for x
    x = 9,813,744,167.13/126,570.38
  6. Step 6: Final answer
    x = 77,535.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.