Home / 129,138.44-193,711.10-40,391.93

Finding the Fourth Proportional to 129,138.44, 193,711.10 and 40,391.93

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Solution

The fourth proportional to 129,138.44, 193,711.10 and 40,391.93 is: 60,588.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,138.44 : 193,711.10 = 40,391.93 : x
  2. Step 2: Convert to fraction form
    129,138.44/193,711.10 = 40,391.93/x
  3. Step 3: Cross multiply
    129,138.44x = 193,711.10 × 40,391.93
  4. Step 4: Simplify right side
    129,138.44x = 7,824,365,473.74
  5. Step 5: Solve for x
    x = 7,824,365,473.74/129,138.44
  6. Step 6: Final answer
    x = 60,588.98

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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.