Home / 129,560.64-193,902-79,672.36

Finding the Fourth Proportional to 129,560.64, 193,902 and 79,672.36

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Solution

The fourth proportional to 129,560.64, 193,902 and 79,672.36 is: 119,238.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,560.64 : 193,902 = 79,672.36 : x
  2. Step 2: Convert to fraction form
    129,560.64/193,902 = 79,672.36/x
  3. Step 3: Cross multiply
    129,560.64x = 193,902 × 79,672.36
  4. Step 4: Simplify right side
    129,560.64x = 15,448,629,948.72
  5. Step 5: Solve for x
    x = 15,448,629,948.72/129,560.64
  6. Step 6: Final answer
    x = 119,238.60

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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.