Home / 128,946.82-193,168.61-84,438.64

Finding the Fourth Proportional to 128,946.82, 193,168.61 and 84,438.64

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Solution

The fourth proportional to 128,946.82, 193,168.61 and 84,438.64 is: 126,493.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,946.82 : 193,168.61 = 84,438.64 : x
  2. Step 2: Convert to fraction form
    128,946.82/193,168.61 = 84,438.64/x
  3. Step 3: Cross multiply
    128,946.82x = 193,168.61 × 84,438.64
  4. Step 4: Simplify right side
    128,946.82x = 16,310,894,719.09
  5. Step 5: Solve for x
    x = 16,310,894,719.09/128,946.82
  6. Step 6: Final answer
    x = 126,493.19

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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.