Home / 129,145.80-193,687.86-54,267.36

Finding the Fourth Proportional to 129,145.80, 193,687.86 and 54,267.36

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Solution

The fourth proportional to 129,145.80, 193,687.86 and 54,267.36 is: 81,388.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,145.80 : 193,687.86 = 54,267.36 : x
  2. Step 2: Convert to fraction form
    129,145.80/193,687.86 = 54,267.36/x
  3. Step 3: Cross multiply
    129,145.80x = 193,687.86 × 54,267.36
  4. Step 4: Simplify right side
    129,145.80x = 10,510,928,826.25
  5. Step 5: Solve for x
    x = 10,510,928,826.25/129,145.80
  6. Step 6: Final answer
    x = 81,388.08

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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.