Home / 212,415.73-318,624.41-86,058.34

Finding the Fourth Proportional to 212,415.73, 318,624.41 and 86,058.34

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Solution

The fourth proportional to 212,415.73, 318,624.41 and 86,058.34 is: 129,087.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,415.73 : 318,624.41 = 86,058.34 : x
  2. Step 2: Convert to fraction form
    212,415.73/318,624.41 = 86,058.34/x
  3. Step 3: Cross multiply
    212,415.73x = 318,624.41 × 86,058.34
  4. Step 4: Simplify right side
    212,415.73x = 27,420,287,808.08
  5. Step 5: Solve for x
    x = 27,420,287,808.08/212,415.73
  6. Step 6: Final answer
    x = 129,087.84

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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.