Home / 129,535.62-178,759.56-75,098.40

Finding the Fourth Proportional to 129,535.62, 178,759.56 and 75,098.40

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Solution

The fourth proportional to 129,535.62, 178,759.56 and 75,098.40 is: 103,636.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,535.62 : 178,759.56 = 75,098.40 : x
  2. Step 2: Convert to fraction form
    129,535.62/178,759.56 = 75,098.40/x
  3. Step 3: Cross multiply
    129,535.62x = 178,759.56 × 75,098.40
  4. Step 4: Simplify right side
    129,535.62x = 13,424,556,940.70
  5. Step 5: Solve for x
    x = 13,424,556,940.70/129,535.62
  6. Step 6: Final answer
    x = 103,636.03

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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.