Home / 109,931.20-164,767.20-57,313.60

Finding the Fourth Proportional to 109,931.20, 164,767.20 and 57,313.60

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Solution

The fourth proportional to 109,931.20, 164,767.20 and 57,313.60 is: 85,902.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,931.20 : 164,767.20 = 57,313.60 : x
  2. Step 2: Convert to fraction form
    109,931.20/164,767.20 = 57,313.60/x
  3. Step 3: Cross multiply
    109,931.20x = 164,767.20 × 57,313.60
  4. Step 4: Simplify right side
    109,931.20x = 9,443,401,393.92
  5. Step 5: Solve for x
    x = 9,443,401,393.92/109,931.20
  6. Step 6: Final answer
    x = 85,902.83

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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.