Home / 212,032.78-318,049.38-99,630.58

Finding the Fourth Proportional to 212,032.78, 318,049.38 and 99,630.58

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Solution

The fourth proportional to 212,032.78, 318,049.38 and 99,630.58 is: 149,445.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,032.78 : 318,049.38 = 99,630.58 : x
  2. Step 2: Convert to fraction form
    212,032.78/318,049.38 = 99,630.58/x
  3. Step 3: Cross multiply
    212,032.78x = 318,049.38 × 99,630.58
  4. Step 4: Simplify right side
    212,032.78x = 31,687,444,198.04
  5. Step 5: Solve for x
    x = 31,687,444,198.04/212,032.78
  6. Step 6: Final answer
    x = 149,445.97

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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.