Home / 120,747.24-166,528.86-77,734.20

Finding the Fourth Proportional to 120,747.24, 166,528.86 and 77,734.20

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Solution

The fourth proportional to 120,747.24, 166,528.86 and 77,734.20 is: 107,207.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,747.24 : 166,528.86 = 77,734.20 : x
  2. Step 2: Convert to fraction form
    120,747.24/166,528.86 = 77,734.20/x
  3. Step 3: Cross multiply
    120,747.24x = 166,528.86 × 77,734.20
  4. Step 4: Simplify right side
    120,747.24x = 12,944,987,709.01
  5. Step 5: Solve for x
    x = 12,944,987,709.01/120,747.24
  6. Step 6: Final answer
    x = 107,207.32

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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.