Home / 212,801.17-318,986.32-137,968.87

Finding the Fourth Proportional to 212,801.17, 318,986.32 and 137,968.87

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Solution

The fourth proportional to 212,801.17, 318,986.32 and 137,968.87 is: 206,813.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,801.17 : 318,986.32 = 137,968.87 : x
  2. Step 2: Convert to fraction form
    212,801.17/318,986.32 = 137,968.87/x
  3. Step 3: Cross multiply
    212,801.17x = 318,986.32 × 137,968.87
  4. Step 4: Simplify right side
    212,801.17x = 44,010,182,115.86
  5. Step 5: Solve for x
    x = 44,010,182,115.86/212,801.17
  6. Step 6: Final answer
    x = 206,813.63

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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.