Home / 129,809.20-194,681.40-49,829.80

Finding the Fourth Proportional to 129,809.20, 194,681.40 and 49,829.80

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Solution

The fourth proportional to 129,809.20, 194,681.40 and 49,829.80 is: 74,732.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,809.20 : 194,681.40 = 49,829.80 : x
  2. Step 2: Convert to fraction form
    129,809.20/194,681.40 = 49,829.80/x
  3. Step 3: Cross multiply
    129,809.20x = 194,681.40 × 49,829.80
  4. Step 4: Simplify right side
    129,809.20x = 9,700,935,225.72
  5. Step 5: Solve for x
    x = 9,700,935,225.72/129,809.20
  6. Step 6: Final answer
    x = 74,732.26

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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.