Home / 129,699.20-194,516.40-49,719.80

Finding the Fourth Proportional to 129,699.20, 194,516.40 and 49,719.80

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Solution

The fourth proportional to 129,699.20, 194,516.40 and 49,719.80 is: 74,567.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,699.20 : 194,516.40 = 49,719.80 : x
  2. Step 2: Convert to fraction form
    129,699.20/194,516.40 = 49,719.80/x
  3. Step 3: Cross multiply
    129,699.20x = 194,516.40 × 49,719.80
  4. Step 4: Simplify right side
    129,699.20x = 9,671,316,504.72
  5. Step 5: Solve for x
    x = 9,671,316,504.72/129,699.20
  6. Step 6: Final answer
    x = 74,567.28

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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.