Home / 212,003.13-318,150.50-87,344.13

Finding the Fourth Proportional to 212,003.13, 318,150.50 and 87,344.13

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Solution

The fourth proportional to 212,003.13, 318,150.50 and 87,344.13 is: 131,076.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,003.13 : 318,150.50 = 87,344.13 : x
  2. Step 2: Convert to fraction form
    212,003.13/318,150.50 = 87,344.13/x
  3. Step 3: Cross multiply
    212,003.13x = 318,150.50 × 87,344.13
  4. Step 4: Simplify right side
    212,003.13x = 27,788,578,631.57
  5. Step 5: Solve for x
    x = 27,788,578,631.57/212,003.13
  6. Step 6: Final answer
    x = 131,076.27

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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.