Home / 128,759.22-192,613.55-103,827.42

Finding the Fourth Proportional to 128,759.22, 192,613.55 and 103,827.42

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Solution

The fourth proportional to 128,759.22, 192,613.55 and 103,827.42 is: 155,317.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,759.22 : 192,613.55 = 103,827.42 : x
  2. Step 2: Convert to fraction form
    128,759.22/192,613.55 = 103,827.42/x
  3. Step 3: Cross multiply
    128,759.22x = 192,613.55 × 103,827.42
  4. Step 4: Simplify right side
    128,759.22x = 19,998,567,434.40
  5. Step 5: Solve for x
    x = 19,998,567,434.40/128,759.22
  6. Step 6: Final answer
    x = 155,317.56

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1.5x scale

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.