Home / 109,839.20-164,758.80-109,061.60

Finding the Fourth Proportional to 109,839.20, 164,758.80 and 109,061.60

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Solution

The fourth proportional to 109,839.20, 164,758.80 and 109,061.60 is: 163,592.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,839.20 : 164,758.80 = 109,061.60 : x
  2. Step 2: Convert to fraction form
    109,839.20/164,758.80 = 109,061.60/x
  3. Step 3: Cross multiply
    109,839.20x = 164,758.80 × 109,061.60
  4. Step 4: Simplify right side
    109,839.20x = 17,968,858,342.08
  5. Step 5: Solve for x
    x = 17,968,858,342.08/109,839.20
  6. Step 6: Final answer
    x = 163,592.40

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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.