Home / 212,996.68-319,495.02-72,756.52

Finding the Fourth Proportional to 212,996.68, 319,495.02 and 72,756.52

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Solution

The fourth proportional to 212,996.68, 319,495.02 and 72,756.52 is: 109,134.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,996.68 : 319,495.02 = 72,756.52 : x
  2. Step 2: Convert to fraction form
    212,996.68/319,495.02 = 72,756.52/x
  3. Step 3: Cross multiply
    212,996.68x = 319,495.02 × 72,756.52
  4. Step 4: Simplify right side
    212,996.68x = 23,245,345,812.53
  5. Step 5: Solve for x
    x = 23,245,345,812.53/212,996.68
  6. Step 6: Final answer
    x = 109,134.78

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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.