Home / 109,639.13-164,479.43-34,778.12

Finding the Fourth Proportional to 109,639.13, 164,479.43 and 34,778.12

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Solution

The fourth proportional to 109,639.13, 164,479.43 and 34,778.12 is: 52,173.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,639.13 : 164,479.43 = 34,778.12 : x
  2. Step 2: Convert to fraction form
    109,639.13/164,479.43 = 34,778.12/x
  3. Step 3: Cross multiply
    109,639.13x = 164,479.43 × 34,778.12
  4. Step 4: Simplify right side
    109,639.13x = 5,720,285,852.22
  5. Step 5: Solve for x
    x = 5,720,285,852.22/109,639.13
  6. Step 6: Final answer
    x = 52,173.76

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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.