Home / 212,935.50-319,457.25-79,816.14

Finding the Fourth Proportional to 212,935.50, 319,457.25 and 79,816.14

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Solution

The fourth proportional to 212,935.50, 319,457.25 and 79,816.14 is: 119,744.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,935.50 : 319,457.25 = 79,816.14 : x
  2. Step 2: Convert to fraction form
    212,935.50/319,457.25 = 79,816.14/x
  3. Step 3: Cross multiply
    212,935.50x = 319,457.25 × 79,816.14
  4. Step 4: Simplify right side
    212,935.50x = 25,497,844,590.02
  5. Step 5: Solve for x
    x = 25,497,844,590.02/212,935.50
  6. Step 6: Final answer
    x = 119,744.45

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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.