Home / 129,089.15-193,709.51-54,203.54

Finding the Fourth Proportional to 129,089.15, 193,709.51 and 54,203.54

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Solution

The fourth proportional to 129,089.15, 193,709.51 and 54,203.54 is: 81,337.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,089.15 : 193,709.51 = 54,203.54 : x
  2. Step 2: Convert to fraction form
    129,089.15/193,709.51 = 54,203.54/x
  3. Step 3: Cross multiply
    129,089.15x = 193,709.51 × 54,203.54
  4. Step 4: Simplify right side
    129,089.15x = 10,499,741,173.67
  5. Step 5: Solve for x
    x = 10,499,741,173.67/129,089.15
  6. Step 6: Final answer
    x = 81,337.13

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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.