Home / 117,819.92-162,638.88-80,117.12

Finding the Fourth Proportional to 117,819.92, 162,638.88 and 80,117.12

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Solution

The fourth proportional to 117,819.92, 162,638.88 and 80,117.12 is: 110,593.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,819.92 : 162,638.88 = 80,117.12 : x
  2. Step 2: Convert to fraction form
    117,819.92/162,638.88 = 80,117.12/x
  3. Step 3: Cross multiply
    117,819.92x = 162,638.88 × 80,117.12
  4. Step 4: Simplify right side
    117,819.92x = 13,030,158,665.63
  5. Step 5: Solve for x
    x = 13,030,158,665.63/117,819.92
  6. Step 6: Final answer
    x = 110,593.85

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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.