Home / 212,560.95-318,832.20-79,442.36

Finding the Fourth Proportional to 212,560.95, 318,832.20 and 79,442.36

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Solution

The fourth proportional to 212,560.95, 318,832.20 and 79,442.36 is: 119,160.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,560.95 : 318,832.20 = 79,442.36 : x
  2. Step 2: Convert to fraction form
    212,560.95/318,832.20 = 79,442.36/x
  3. Step 3: Cross multiply
    212,560.95x = 318,832.20 × 79,442.36
  4. Step 4: Simplify right side
    212,560.95x = 25,328,780,817.83
  5. Step 5: Solve for x
    x = 25,328,780,817.83/212,560.95
  6. Step 6: Final answer
    x = 119,160.08

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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.