Home / 103,040.85-154,332.92-79,172.72

Finding the Fourth Proportional to 103,040.85, 154,332.92 and 79,172.72

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Solution

The fourth proportional to 103,040.85, 154,332.92 and 79,172.72 is: 118,583.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,040.85 : 154,332.92 = 79,172.72 : x
  2. Step 2: Convert to fraction form
    103,040.85/154,332.92 = 79,172.72/x
  3. Step 3: Cross multiply
    103,040.85x = 154,332.92 × 79,172.72
  4. Step 4: Simplify right side
    103,040.85x = 12,218,955,894.41
  5. Step 5: Solve for x
    x = 12,218,955,894.41/103,040.85
  6. Step 6: Final answer
    x = 118,583.61

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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.