Home / 109,403.40-164,105.10-39,289.80

Finding the Fourth Proportional to 109,403.40, 164,105.10 and 39,289.80

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Solution

The fourth proportional to 109,403.40, 164,105.10 and 39,289.80 is: 58,934.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,403.40 : 164,105.10 = 39,289.80 : x
  2. Step 2: Convert to fraction form
    109,403.40/164,105.10 = 39,289.80/x
  3. Step 3: Cross multiply
    109,403.40x = 164,105.10 × 39,289.80
  4. Step 4: Simplify right side
    109,403.40x = 6,447,656,557.98
  5. Step 5: Solve for x
    x = 6,447,656,557.98/109,403.40
  6. Step 6: Final answer
    x = 58,934.70

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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.