Home / 128,565.74-192,899.30-39,826.14

Finding the Fourth Proportional to 128,565.74, 192,899.30 and 39,826.14

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Solution

The fourth proportional to 128,565.74, 192,899.30 and 39,826.14 is: 59,754.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,565.74 : 192,899.30 = 39,826.14 : x
  2. Step 2: Convert to fraction form
    128,565.74/192,899.30 = 39,826.14/x
  3. Step 3: Cross multiply
    128,565.74x = 192,899.30 × 39,826.14
  4. Step 4: Simplify right side
    128,565.74x = 7,682,434,527.70
  5. Step 5: Solve for x
    x = 7,682,434,527.70/128,565.74
  6. Step 6: Final answer
    x = 59,754.91

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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.