Home / 185,720.40-278,548.20-67,330.80

Finding the Fourth Proportional to 185,720.40, 278,548.20 and 67,330.80

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Solution

The fourth proportional to 185,720.40, 278,548.20 and 67,330.80 is: 100,984.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,720.40 : 278,548.20 = 67,330.80 : x
  2. Step 2: Convert to fraction form
    185,720.40/278,548.20 = 67,330.80/x
  3. Step 3: Cross multiply
    185,720.40x = 278,548.20 × 67,330.80
  4. Step 4: Simplify right side
    185,720.40x = 18,754,873,144.56
  5. Step 5: Solve for x
    x = 18,754,873,144.56/185,720.40
  6. Step 6: Final answer
    x = 100,984.45

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1.5x scale

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.