Home / 212,101.46-318,144.90-54,331.28

Finding the Fourth Proportional to 212,101.46, 318,144.90 and 54,331.28

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Solution

The fourth proportional to 212,101.46, 318,144.90 and 54,331.28 is: 81,495.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,101.46 : 318,144.90 = 54,331.28 : x
  2. Step 2: Convert to fraction form
    212,101.46/318,144.90 = 54,331.28/x
  3. Step 3: Cross multiply
    212,101.46x = 318,144.90 × 54,331.28
  4. Step 4: Simplify right side
    212,101.46x = 17,285,219,642.47
  5. Step 5: Solve for x
    x = 17,285,219,642.47/212,101.46
  6. Step 6: Final answer
    x = 81,495.05

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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.