Home / 212,416.30-318,624.45-117,937.90

Finding the Fourth Proportional to 212,416.30, 318,624.45 and 117,937.90

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Solution

The fourth proportional to 212,416.30, 318,624.45 and 117,937.90 is: 176,906.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,416.30 : 318,624.45 = 117,937.90 : x
  2. Step 2: Convert to fraction form
    212,416.30/318,624.45 = 117,937.90/x
  3. Step 3: Cross multiply
    212,416.30x = 318,624.45 × 117,937.90
  4. Step 4: Simplify right side
    212,416.30x = 37,577,898,521.66
  5. Step 5: Solve for x
    x = 37,577,898,521.66/212,416.30
  6. Step 6: Final answer
    x = 176,906.85

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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.