Home / 87,156.30-120,283.83-51,357.42

Finding the Fourth Proportional to 87,156.30, 120,283.83 and 51,357.42

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Solution

The fourth proportional to 87,156.30, 120,283.83 and 51,357.42 is: 70,878.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,156.30 : 120,283.83 = 51,357.42 : x
  2. Step 2: Convert to fraction form
    87,156.30/120,283.83 = 51,357.42/x
  3. Step 3: Cross multiply
    87,156.30x = 120,283.83 × 51,357.42
  4. Step 4: Simplify right side
    87,156.30x = 6,177,467,176.52
  5. Step 5: Solve for x
    x = 6,177,467,176.52/87,156.30
  6. Step 6: Final answer
    x = 70,878.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.