Home / 129,288.84-193,803.48-54,427.20

Finding the Fourth Proportional to 129,288.84, 193,803.48 and 54,427.20

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Solution

The fourth proportional to 129,288.84, 193,803.48 and 54,427.20 is: 81,586.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,288.84 : 193,803.48 = 54,427.20 : x
  2. Step 2: Convert to fraction form
    129,288.84/193,803.48 = 54,427.20/x
  3. Step 3: Cross multiply
    129,288.84x = 193,803.48 × 54,427.20
  4. Step 4: Simplify right side
    129,288.84x = 10,548,180,766.66
  5. Step 5: Solve for x
    x = 10,548,180,766.66/129,288.84
  6. Step 6: Final answer
    x = 81,586.17

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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.