Home / 125,315.55-187,890.30-69,182.55

Finding the Fourth Proportional to 125,315.55, 187,890.30 and 69,182.55

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Solution

The fourth proportional to 125,315.55, 187,890.30 and 69,182.55 is: 103,727.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,315.55 : 187,890.30 = 69,182.55 : x
  2. Step 2: Convert to fraction form
    125,315.55/187,890.30 = 69,182.55/x
  3. Step 3: Cross multiply
    125,315.55x = 187,890.30 × 69,182.55
  4. Step 4: Simplify right side
    125,315.55x = 12,998,730,074.27
  5. Step 5: Solve for x
    x = 12,998,730,074.27/125,315.55
  6. Step 6: Final answer
    x = 103,727.99

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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.