Home / 129,701.20-194,443.80-54,878.80

Finding the Fourth Proportional to 129,701.20, 194,443.80 and 54,878.80

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Solution

The fourth proportional to 129,701.20, 194,443.80 and 54,878.80 is: 82,272.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,701.20 : 194,443.80 = 54,878.80 : x
  2. Step 2: Convert to fraction form
    129,701.20/194,443.80 = 54,878.80/x
  3. Step 3: Cross multiply
    129,701.20x = 194,443.80 × 54,878.80
  4. Step 4: Simplify right side
    129,701.20x = 10,670,842,411.44
  5. Step 5: Solve for x
    x = 10,670,842,411.44/129,701.20
  6. Step 6: Final answer
    x = 82,272.50

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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.