Home / 133,385.20-200,009.40-39,878.80

Finding the Fourth Proportional to 133,385.20, 200,009.40 and 39,878.80

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Solution

The fourth proportional to 133,385.20, 200,009.40 and 39,878.80 is: 59,797.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,385.20 : 200,009.40 = 39,878.80 : x
  2. Step 2: Convert to fraction form
    133,385.20/200,009.40 = 39,878.80/x
  3. Step 3: Cross multiply
    133,385.20x = 200,009.40 × 39,878.80
  4. Step 4: Simplify right side
    133,385.20x = 7,976,134,860.72
  5. Step 5: Solve for x
    x = 7,976,134,860.72/133,385.20
  6. Step 6: Final answer
    x = 59,797.75

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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.