Home / 212,784.12-319,181.76-55,012.14

Finding the Fourth Proportional to 212,784.12, 319,181.76 and 55,012.14

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Solution

The fourth proportional to 212,784.12, 319,181.76 and 55,012.14 is: 82,519.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,784.12 : 319,181.76 = 55,012.14 : x
  2. Step 2: Convert to fraction form
    212,784.12/319,181.76 = 55,012.14/x
  3. Step 3: Cross multiply
    212,784.12x = 319,181.76 × 55,012.14
  4. Step 4: Simplify right side
    212,784.12x = 17,558,871,666.57
  5. Step 5: Solve for x
    x = 17,558,871,666.57/212,784.12
  6. Step 6: Final answer
    x = 82,519.65

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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.