Home / 129,076.04-193,441.80-68,981.34

Finding the Fourth Proportional to 129,076.04, 193,441.80 and 68,981.34

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Solution

The fourth proportional to 129,076.04, 193,441.80 and 68,981.34 is: 103,379.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,076.04 : 193,441.80 = 68,981.34 : x
  2. Step 2: Convert to fraction form
    129,076.04/193,441.80 = 68,981.34/x
  3. Step 3: Cross multiply
    129,076.04x = 193,441.80 × 68,981.34
  4. Step 4: Simplify right side
    129,076.04x = 13,343,874,576.01
  5. Step 5: Solve for x
    x = 13,343,874,576.01/129,076.04
  6. Step 6: Final answer
    x = 103,379.95

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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.