Home / 211,105.29-316,824.35-78,023.60

Finding the Fourth Proportional to 211,105.29, 316,824.35 and 78,023.60

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Solution

The fourth proportional to 211,105.29, 316,824.35 and 78,023.60 is: 117,096.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,105.29 : 316,824.35 = 78,023.60 : x
  2. Step 2: Convert to fraction form
    211,105.29/316,824.35 = 78,023.60/x
  3. Step 3: Cross multiply
    211,105.29x = 316,824.35 × 78,023.60
  4. Step 4: Simplify right side
    211,105.29x = 24,719,776,354.66
  5. Step 5: Solve for x
    x = 24,719,776,354.66/211,105.29
  6. Step 6: Final answer
    x = 117,096.91

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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.