Home / 129,457.48-193,937.46-79,391.62

Finding the Fourth Proportional to 129,457.48, 193,937.46 and 79,391.62

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Solution

The fourth proportional to 129,457.48, 193,937.46 and 79,391.62 is: 118,934.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,457.48 : 193,937.46 = 79,391.62 : x
  2. Step 2: Convert to fraction form
    129,457.48/193,937.46 = 79,391.62/x
  3. Step 3: Cross multiply
    129,457.48x = 193,937.46 × 79,391.62
  4. Step 4: Simplify right side
    129,457.48x = 15,397,009,128.09
  5. Step 5: Solve for x
    x = 15,397,009,128.09/129,457.48
  6. Step 6: Final answer
    x = 118,934.87

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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.