Home / 212,331.25-318,546.09-72,089.88

Finding the Fourth Proportional to 212,331.25, 318,546.09 and 72,089.88

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Solution

The fourth proportional to 212,331.25, 318,546.09 and 72,089.88 is: 108,151.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,331.25 : 318,546.09 = 72,089.88 : x
  2. Step 2: Convert to fraction form
    212,331.25/318,546.09 = 72,089.88/x
  3. Step 3: Cross multiply
    212,331.25x = 318,546.09 × 72,089.88
  4. Step 4: Simplify right side
    212,331.25x = 22,963,947,809.84
  5. Step 5: Solve for x
    x = 22,963,947,809.84/212,331.25
  6. Step 6: Final answer
    x = 108,151.52

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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.