Home / 129,192.12-193,683.48-40,399.92

Finding the Fourth Proportional to 129,192.12, 193,683.48 and 40,399.92

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Solution

The fourth proportional to 129,192.12, 193,683.48 and 40,399.92 is: 60,567.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,192.12 : 193,683.48 = 40,399.92 : x
  2. Step 2: Convert to fraction form
    129,192.12/193,683.48 = 40,399.92/x
  3. Step 3: Cross multiply
    129,192.12x = 193,683.48 × 40,399.92
  4. Step 4: Simplify right side
    129,192.12x = 7,824,797,097.32
  5. Step 5: Solve for x
    x = 7,824,797,097.32/129,192.12
  6. Step 6: Final answer
    x = 60,567.14

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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.