Home / 257,909.14-386,739.28-108,109.20

Finding the Fourth Proportional to 257,909.14, 386,739.28 and 108,109.20

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Solution

The fourth proportional to 257,909.14, 386,739.28 and 108,109.20 is: 162,111.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,909.14 : 386,739.28 = 108,109.20 : x
  2. Step 2: Convert to fraction form
    257,909.14/386,739.28 = 108,109.20/x
  3. Step 3: Cross multiply
    257,909.14x = 386,739.28 × 108,109.20
  4. Step 4: Simplify right side
    257,909.14x = 41,810,074,169.38
  5. Step 5: Solve for x
    x = 41,810,074,169.38/257,909.14
  6. Step 6: Final answer
    x = 162,111.64

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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.