Home / 103,660.46-155,302.06-72,003.64

Finding the Fourth Proportional to 103,660.46, 155,302.06 and 72,003.64

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Solution

The fourth proportional to 103,660.46, 155,302.06 and 72,003.64 is: 107,874.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,660.46 : 155,302.06 = 72,003.64 : x
  2. Step 2: Convert to fraction form
    103,660.46/155,302.06 = 72,003.64/x
  3. Step 3: Cross multiply
    103,660.46x = 155,302.06 × 72,003.64
  4. Step 4: Simplify right side
    103,660.46x = 11,182,313,619.50
  5. Step 5: Solve for x
    x = 11,182,313,619.50/103,660.46
  6. Step 6: Final answer
    x = 107,874.44

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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.