Home / 112,559.88-168,718.32-73,145.28

Finding the Fourth Proportional to 112,559.88, 168,718.32 and 73,145.28

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Solution

The fourth proportional to 112,559.88, 168,718.32 and 73,145.28 is: 109,638.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,559.88 : 168,718.32 = 73,145.28 : x
  2. Step 2: Convert to fraction form
    112,559.88/168,718.32 = 73,145.28/x
  3. Step 3: Cross multiply
    112,559.88x = 168,718.32 × 73,145.28
  4. Step 4: Simplify right side
    112,559.88x = 12,340,948,757.53
  5. Step 5: Solve for x
    x = 12,340,948,757.53/112,559.88
  6. Step 6: Final answer
    x = 109,638.97

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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.