Home / 212,376.78-318,417.55-93,983.54

Finding the Fourth Proportional to 212,376.78, 318,417.55 and 93,983.54

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Solution

The fourth proportional to 212,376.78, 318,417.55 and 93,983.54 is: 140,909.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,376.78 : 318,417.55 = 93,983.54 : x
  2. Step 2: Convert to fraction form
    212,376.78/318,417.55 = 93,983.54/x
  3. Step 3: Cross multiply
    212,376.78x = 318,417.55 × 93,983.54
  4. Step 4: Simplify right side
    212,376.78x = 29,926,006,720.08
  5. Step 5: Solve for x
    x = 29,926,006,720.08/212,376.78
  6. Step 6: Final answer
    x = 140,909.97

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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.