Home / 129,458.48-193,938.96-79,392.62

Finding the Fourth Proportional to 129,458.48, 193,938.96 and 79,392.62

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Solution

The fourth proportional to 129,458.48, 193,938.96 and 79,392.62 is: 118,936.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,458.48 : 193,938.96 = 79,392.62 : x
  2. Step 2: Convert to fraction form
    129,458.48/193,938.96 = 79,392.62/x
  3. Step 3: Cross multiply
    129,458.48x = 193,938.96 × 79,392.62
  4. Step 4: Simplify right side
    129,458.48x = 15,397,322,154.48
  5. Step 5: Solve for x
    x = 15,397,322,154.48/129,458.48
  6. Step 6: Final answer
    x = 118,936.37

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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.