Home / 213,614.04-320,452.17-78,742.67

Finding the Fourth Proportional to 213,614.04, 320,452.17 and 78,742.67

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Solution

The fourth proportional to 213,614.04, 320,452.17 and 78,742.67 is: 118,125.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,614.04 : 320,452.17 = 78,742.67 : x
  2. Step 2: Convert to fraction form
    213,614.04/320,452.17 = 78,742.67/x
  3. Step 3: Cross multiply
    213,614.04x = 320,452.17 × 78,742.67
  4. Step 4: Simplify right side
    213,614.04x = 25,233,257,575.55
  5. Step 5: Solve for x
    x = 25,233,257,575.55/213,614.04
  6. Step 6: Final answer
    x = 118,125.46

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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.