Home / 128,167.76-192,284.46-39,422.04

Finding the Fourth Proportional to 128,167.76, 192,284.46 and 39,422.04

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Solution

The fourth proportional to 128,167.76, 192,284.46 and 39,422.04 is: 59,143.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,167.76 : 192,284.46 = 39,422.04 : x
  2. Step 2: Convert to fraction form
    128,167.76/192,284.46 = 39,422.04/x
  3. Step 3: Cross multiply
    128,167.76x = 192,284.46 × 39,422.04
  4. Step 4: Simplify right side
    128,167.76x = 7,580,245,673.50
  5. Step 5: Solve for x
    x = 7,580,245,673.50/128,167.76
  6. Step 6: Final answer
    x = 59,143.16

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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.