Home / 109,728.40-164,494.05-43,213.90

Finding the Fourth Proportional to 109,728.40, 164,494.05 and 43,213.90

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Solution

The fourth proportional to 109,728.40, 164,494.05 and 43,213.90 is: 64,782.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,728.40 : 164,494.05 = 43,213.90 : x
  2. Step 2: Convert to fraction form
    109,728.40/164,494.05 = 43,213.90/x
  3. Step 3: Cross multiply
    109,728.40x = 164,494.05 × 43,213.90
  4. Step 4: Simplify right side
    109,728.40x = 7,108,429,427.30
  5. Step 5: Solve for x
    x = 7,108,429,427.30/109,728.40
  6. Step 6: Final answer
    x = 64,782.04

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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.