Home / 79,614.77-109,156.34-78,193.22

Finding the Fourth Proportional to 79,614.77, 109,156.34 and 78,193.22

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Solution

The fourth proportional to 79,614.77, 109,156.34 and 78,193.22 is: 107,207.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,614.77 : 109,156.34 = 78,193.22 : x
  2. Step 2: Convert to fraction form
    79,614.77/109,156.34 = 78,193.22/x
  3. Step 3: Cross multiply
    79,614.77x = 109,156.34 × 78,193.22
  4. Step 4: Simplify right side
    79,614.77x = 8,535,285,357.72
  5. Step 5: Solve for x
    x = 8,535,285,357.72/79,614.77
  6. Step 6: Final answer
    x = 107,207.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.