Home / 131,388.40-197,131.20-52,559.20

Finding the Fourth Proportional to 131,388.40, 197,131.20 and 52,559.20

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Solution

The fourth proportional to 131,388.40, 197,131.20 and 52,559.20 is: 78,858.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,388.40 : 197,131.20 = 52,559.20 : x
  2. Step 2: Convert to fraction form
    131,388.40/197,131.20 = 52,559.20/x
  3. Step 3: Cross multiply
    131,388.40x = 197,131.20 × 52,559.20
  4. Step 4: Simplify right side
    131,388.40x = 10,361,058,167.04
  5. Step 5: Solve for x
    x = 10,361,058,167.04/131,388.40
  6. Step 6: Final answer
    x = 78,858.24

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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.