Home / 212,570.93-318,861.18-79,378.53

Finding the Fourth Proportional to 212,570.93, 318,861.18 and 79,378.53

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Solution

The fourth proportional to 212,570.93, 318,861.18 and 79,378.53 is: 119,069.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,570.93 : 318,861.18 = 79,378.53 : x
  2. Step 2: Convert to fraction form
    212,570.93/318,861.18 = 79,378.53/x
  3. Step 3: Cross multiply
    212,570.93x = 318,861.18 × 79,378.53
  4. Step 4: Simplify right side
    212,570.93x = 25,310,732,563.58
  5. Step 5: Solve for x
    x = 25,310,732,563.58/212,570.93
  6. Step 6: Final answer
    x = 119,069.58

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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.