Home / 212,316.18-318,463.93-79,186.20

Finding the Fourth Proportional to 212,316.18, 318,463.93 and 79,186.20

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Solution

The fourth proportional to 212,316.18, 318,463.93 and 79,186.20 is: 118,775.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,316.18 : 318,463.93 = 79,186.20 : x
  2. Step 2: Convert to fraction form
    212,316.18/318,463.93 = 79,186.20/x
  3. Step 3: Cross multiply
    212,316.18x = 318,463.93 × 79,186.20
  4. Step 4: Simplify right side
    212,316.18x = 25,217,948,453.77
  5. Step 5: Solve for x
    x = 25,217,948,453.77/212,316.18
  6. Step 6: Final answer
    x = 118,775.44

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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.