Home / 125,128.68-172,682.34-71,422.44

Finding the Fourth Proportional to 125,128.68, 172,682.34 and 71,422.44

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Solution

The fourth proportional to 125,128.68, 172,682.34 and 71,422.44 is: 98,565.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,128.68 : 172,682.34 = 71,422.44 : x
  2. Step 2: Convert to fraction form
    125,128.68/172,682.34 = 71,422.44/x
  3. Step 3: Cross multiply
    125,128.68x = 172,682.34 × 71,422.44
  4. Step 4: Simplify right side
    125,128.68x = 12,333,394,067.71
  5. Step 5: Solve for x
    x = 12,333,394,067.71/125,128.68
  6. Step 6: Final answer
    x = 98,565.69

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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.