Home / 142,099.92-196,104.24-81,690.12

Finding the Fourth Proportional to 142,099.92, 196,104.24 and 81,690.12

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Solution

The fourth proportional to 142,099.92, 196,104.24 and 81,690.12 is: 112,736.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,099.92 : 196,104.24 = 81,690.12 : x
  2. Step 2: Convert to fraction form
    142,099.92/196,104.24 = 81,690.12/x
  3. Step 3: Cross multiply
    142,099.92x = 196,104.24 × 81,690.12
  4. Step 4: Simplify right side
    142,099.92x = 16,019,778,898.11
  5. Step 5: Solve for x
    x = 16,019,778,898.11/142,099.92
  6. Step 6: Final answer
    x = 112,736.02

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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.