Home / 129,649.73-194,548.40-103,520.55

Finding the Fourth Proportional to 129,649.73, 194,548.40 and 103,520.55

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Solution

The fourth proportional to 129,649.73, 194,548.40 and 103,520.55 is: 155,339.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,649.73 : 194,548.40 = 103,520.55 : x
  2. Step 2: Convert to fraction form
    129,649.73/194,548.40 = 103,520.55/x
  3. Step 3: Cross multiply
    129,649.73x = 194,548.40 × 103,520.55
  4. Step 4: Simplify right side
    129,649.73x = 20,139,756,852.02
  5. Step 5: Solve for x
    x = 20,139,756,852.02/129,649.73
  6. Step 6: Final answer
    x = 155,339.76

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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.