Home / 212,378.53-318,420.17-93,985.29

Finding the Fourth Proportional to 212,378.53, 318,420.17 and 93,985.29

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Solution

The fourth proportional to 212,378.53, 318,420.17 and 93,985.29 is: 140,912.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,378.53 : 318,420.17 = 93,985.29 : x
  2. Step 2: Convert to fraction form
    212,378.53/318,420.17 = 93,985.29/x
  3. Step 3: Cross multiply
    212,378.53x = 318,420.17 × 93,985.29
  4. Step 4: Simplify right side
    212,378.53x = 29,926,812,019.30
  5. Step 5: Solve for x
    x = 29,926,812,019.30/212,378.53
  6. Step 6: Final answer
    x = 140,912.61

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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.