Home / 212,194.73-318,432.30-99,907.05

Finding the Fourth Proportional to 212,194.73, 318,432.30 and 99,907.05

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Solution

The fourth proportional to 212,194.73, 318,432.30 and 99,907.05 is: 149,926.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,194.73 : 318,432.30 = 99,907.05 : x
  2. Step 2: Convert to fraction form
    212,194.73/318,432.30 = 99,907.05/x
  3. Step 3: Cross multiply
    212,194.73x = 318,432.30 × 99,907.05
  4. Step 4: Simplify right side
    212,194.73x = 31,813,631,717.72
  5. Step 5: Solve for x
    x = 31,813,631,717.72/212,194.73
  6. Step 6: Final answer
    x = 149,926.59

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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.