Home / 212,561.45-318,832.95-79,442.86

Finding the Fourth Proportional to 212,561.45, 318,832.95 and 79,442.86

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Solution

The fourth proportional to 212,561.45, 318,832.95 and 79,442.86 is: 119,160.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,561.45 : 318,832.95 = 79,442.86 : x
  2. Step 2: Convert to fraction form
    212,561.45/318,832.95 = 79,442.86/x
  3. Step 3: Cross multiply
    212,561.45x = 318,832.95 × 79,442.86
  4. Step 4: Simplify right side
    212,561.45x = 25,329,001,410.24
  5. Step 5: Solve for x
    x = 25,329,001,410.24/212,561.45
  6. Step 6: Final answer
    x = 119,160.84

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1.5x scale

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.