Home / 192,918.80-288,989.40-129,933.20

Finding the Fourth Proportional to 192,918.80, 288,989.40 and 129,933.20

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Solution

The fourth proportional to 192,918.80, 288,989.40 and 129,933.20 is: 194,637.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,918.80 : 288,989.40 = 129,933.20 : x
  2. Step 2: Convert to fraction form
    192,918.80/288,989.40 = 129,933.20/x
  3. Step 3: Cross multiply
    192,918.80x = 288,989.40 × 129,933.20
  4. Step 4: Simplify right side
    192,918.80x = 37,549,317,508.08
  5. Step 5: Solve for x
    x = 37,549,317,508.08/192,918.80
  6. Step 6: Final answer
    x = 194,637.94

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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.