Home / 212,835.74-319,110.60-84,667.12

Finding the Fourth Proportional to 212,835.74, 319,110.60 and 84,667.12

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Solution

The fourth proportional to 212,835.74, 319,110.60 and 84,667.12 is: 126,943.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,835.74 : 319,110.60 = 84,667.12 : x
  2. Step 2: Convert to fraction form
    212,835.74/319,110.60 = 84,667.12/x
  3. Step 3: Cross multiply
    212,835.74x = 319,110.60 × 84,667.12
  4. Step 4: Simplify right side
    212,835.74x = 27,018,175,463.47
  5. Step 5: Solve for x
    x = 27,018,175,463.47/212,835.74
  6. Step 6: Final answer
    x = 126,943.79

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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.