Home / 129,939.12-194,774.76-49,955.40

Finding the Fourth Proportional to 129,939.12, 194,774.76 and 49,955.40

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Solution

The fourth proportional to 129,939.12, 194,774.76 and 49,955.40 is: 74,881.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,939.12 : 194,774.76 = 49,955.40 : x
  2. Step 2: Convert to fraction form
    129,939.12/194,774.76 = 49,955.40/x
  3. Step 3: Cross multiply
    129,939.12x = 194,774.76 × 49,955.40
  4. Step 4: Simplify right side
    129,939.12x = 9,730,051,045.70
  5. Step 5: Solve for x
    x = 9,730,051,045.70/129,939.12
  6. Step 6: Final answer
    x = 74,881.61

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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.