Home / 109,839.30-164,564.55-102,840.90

Finding the Fourth Proportional to 109,839.30, 164,564.55 and 102,840.90

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Solution

The fourth proportional to 109,839.30, 164,564.55 and 102,840.90 is: 154,079.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,839.30 : 164,564.55 = 102,840.90 : x
  2. Step 2: Convert to fraction form
    109,839.30/164,564.55 = 102,840.90/x
  3. Step 3: Cross multiply
    109,839.30x = 164,564.55 × 102,840.90
  4. Step 4: Simplify right side
    109,839.30x = 16,923,966,430.10
  5. Step 5: Solve for x
    x = 16,923,966,430.10/109,839.30
  6. Step 6: Final answer
    x = 154,079.34

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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.