Home / 109,865.85-164,347.57-87,722.47

Finding the Fourth Proportional to 109,865.85, 164,347.57 and 87,722.47

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Solution

The fourth proportional to 109,865.85, 164,347.57 and 87,722.47 is: 131,223.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,865.85 : 164,347.57 = 87,722.47 : x
  2. Step 2: Convert to fraction form
    109,865.85/164,347.57 = 87,722.47/x
  3. Step 3: Cross multiply
    109,865.85x = 164,347.57 × 87,722.47
  4. Step 4: Simplify right side
    109,865.85x = 14,416,974,778.90
  5. Step 5: Solve for x
    x = 14,416,974,778.90/109,865.85
  6. Step 6: Final answer
    x = 131,223.44

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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.