Home / 136,914.80-205,372.20-38,418.80

Finding the Fourth Proportional to 136,914.80, 205,372.20 and 38,418.80

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Solution

The fourth proportional to 136,914.80, 205,372.20 and 38,418.80 is: 57,628.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,914.80 : 205,372.20 = 38,418.80 : x
  2. Step 2: Convert to fraction form
    136,914.80/205,372.20 = 38,418.80/x
  3. Step 3: Cross multiply
    136,914.80x = 205,372.20 × 38,418.80
  4. Step 4: Simplify right side
    136,914.80x = 7,890,153,477.36
  5. Step 5: Solve for x
    x = 7,890,153,477.36/136,914.80
  6. Step 6: Final answer
    x = 57,628.20

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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.