Home / 123,854.27-170,919.21-72,868.92

Finding the Fourth Proportional to 123,854.27, 170,919.21 and 72,868.92

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Solution

The fourth proportional to 123,854.27, 170,919.21 and 72,868.92 is: 100,559.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,854.27 : 170,919.21 = 72,868.92 : x
  2. Step 2: Convert to fraction form
    123,854.27/170,919.21 = 72,868.92/x
  3. Step 3: Cross multiply
    123,854.27x = 170,919.21 × 72,868.92
  4. Step 4: Simplify right side
    123,854.27x = 12,454,697,872.26
  5. Step 5: Solve for x
    x = 12,454,697,872.26/123,854.27
  6. Step 6: Final answer
    x = 100,559.30

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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.