Home / 185,712.40-278,536.20-67,322.80

Finding the Fourth Proportional to 185,712.40, 278,536.20 and 67,322.80

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Solution

The fourth proportional to 185,712.40, 278,536.20 and 67,322.80 is: 100,972.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,712.40 : 278,536.20 = 67,322.80 : x
  2. Step 2: Convert to fraction form
    185,712.40/278,536.20 = 67,322.80/x
  3. Step 3: Cross multiply
    185,712.40x = 278,536.20 × 67,322.80
  4. Step 4: Simplify right side
    185,712.40x = 18,751,836,885.36
  5. Step 5: Solve for x
    x = 18,751,836,885.36/185,712.40
  6. Step 6: Final answer
    x = 100,972.45

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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.