Home / 129,179.55-193,664.76-40,387.35

Finding the Fourth Proportional to 129,179.55, 193,664.76 and 40,387.35

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Solution

The fourth proportional to 129,179.55, 193,664.76 and 40,387.35 is: 60,548.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,179.55 : 193,664.76 = 40,387.35 : x
  2. Step 2: Convert to fraction form
    129,179.55/193,664.76 = 40,387.35/x
  3. Step 3: Cross multiply
    129,179.55x = 193,664.76 × 40,387.35
  4. Step 4: Simplify right side
    129,179.55x = 7,821,606,444.79
  5. Step 5: Solve for x
    x = 7,821,606,444.79/129,179.55
  6. Step 6: Final answer
    x = 60,548.33

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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.