Home / 115,914.70-173,872.05-87,921.10

Finding the Fourth Proportional to 115,914.70, 173,872.05 and 87,921.10

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Solution

The fourth proportional to 115,914.70, 173,872.05 and 87,921.10 is: 131,881.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,914.70 : 173,872.05 = 87,921.10 : x
  2. Step 2: Convert to fraction form
    115,914.70/173,872.05 = 87,921.10/x
  3. Step 3: Cross multiply
    115,914.70x = 173,872.05 × 87,921.10
  4. Step 4: Simplify right side
    115,914.70x = 15,287,021,895.26
  5. Step 5: Solve for x
    x = 15,287,021,895.26/115,914.70
  6. Step 6: Final answer
    x = 131,881.65

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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.