Home / 125,561.68-189,206.24-103,863.40

Finding the Fourth Proportional to 125,561.68, 189,206.24 and 103,863.40

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Solution

The fourth proportional to 125,561.68, 189,206.24 and 103,863.40 is: 156,509.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,561.68 : 189,206.24 = 103,863.40 : x
  2. Step 2: Convert to fraction form
    125,561.68/189,206.24 = 103,863.40/x
  3. Step 3: Cross multiply
    125,561.68x = 189,206.24 × 103,863.40
  4. Step 4: Simplify right side
    125,561.68x = 19,651,603,387.62
  5. Step 5: Solve for x
    x = 19,651,603,387.62/125,561.68
  6. Step 6: Final answer
    x = 156,509.56

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.