Home / 151,905.87-209,623.68-87,370.22

Finding the Fourth Proportional to 151,905.87, 209,623.68 and 87,370.22

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Solution

The fourth proportional to 151,905.87, 209,623.68 and 87,370.22 is: 120,567.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,905.87 : 209,623.68 = 87,370.22 : x
  2. Step 2: Convert to fraction form
    151,905.87/209,623.68 = 87,370.22/x
  3. Step 3: Cross multiply
    151,905.87x = 209,623.68 × 87,370.22
  4. Step 4: Simplify right side
    151,905.87x = 18,314,867,562.87
  5. Step 5: Solve for x
    x = 18,314,867,562.87/151,905.87
  6. Step 6: Final answer
    x = 120,567.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.