Home / 212,868.63-319,333.68-70,665.57

Finding the Fourth Proportional to 212,868.63, 319,333.68 and 70,665.57

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Solution

The fourth proportional to 212,868.63, 319,333.68 and 70,665.57 is: 106,008.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,868.63 : 319,333.68 = 70,665.57 : x
  2. Step 2: Convert to fraction form
    212,868.63/319,333.68 = 70,665.57/x
  3. Step 3: Cross multiply
    212,868.63x = 319,333.68 × 70,665.57
  4. Step 4: Simplify right side
    212,868.63x = 22,565,896,517.40
  5. Step 5: Solve for x
    x = 22,565,896,517.40/212,868.63
  6. Step 6: Final answer
    x = 106,008.56

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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.