Home / 87,678.72-131,803.20-70,338.24

Finding the Fourth Proportional to 87,678.72, 131,803.20 and 70,338.24

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Solution

The fourth proportional to 87,678.72, 131,803.20 and 70,338.24 is: 105,736.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,678.72 : 131,803.20 = 70,338.24 : x
  2. Step 2: Convert to fraction form
    87,678.72/131,803.20 = 70,338.24/x
  3. Step 3: Cross multiply
    87,678.72x = 131,803.20 × 70,338.24
  4. Step 4: Simplify right side
    87,678.72x = 9,270,805,114.37
  5. Step 5: Solve for x
    x = 9,270,805,114.37/87,678.72
  6. Step 6: Final answer
    x = 105,736.09

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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.