Home / 212,105.63-318,077.64-93,712.38

Finding the Fourth Proportional to 212,105.63, 318,077.64 and 93,712.38

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Solution

The fourth proportional to 212,105.63, 318,077.64 and 93,712.38 is: 140,532.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,105.63 : 318,077.64 = 93,712.38 : x
  2. Step 2: Convert to fraction form
    212,105.63/318,077.64 = 93,712.38/x
  3. Step 3: Cross multiply
    212,105.63x = 318,077.64 × 93,712.38
  4. Step 4: Simplify right side
    212,105.63x = 29,807,812,669.18
  5. Step 5: Solve for x
    x = 29,807,812,669.18/212,105.63
  6. Step 6: Final answer
    x = 140,532.87

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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.