Home / 129,871.47-194,812.78-51,002.79

Finding the Fourth Proportional to 129,871.47, 194,812.78 and 51,002.79

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Solution

The fourth proportional to 129,871.47, 194,812.78 and 51,002.79 is: 76,506.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,871.47 : 194,812.78 = 51,002.79 : x
  2. Step 2: Convert to fraction form
    129,871.47/194,812.78 = 51,002.79/x
  3. Step 3: Cross multiply
    129,871.47x = 194,812.78 × 51,002.79
  4. Step 4: Simplify right side
    129,871.47x = 9,935,995,307.66
  5. Step 5: Solve for x
    x = 9,935,995,307.66/129,871.47
  6. Step 6: Final answer
    x = 76,506.37

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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.