Home / 128,664.90-193,170.15-82,124.10

Finding the Fourth Proportional to 128,664.90, 193,170.15 and 82,124.10

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Solution

The fourth proportional to 128,664.90, 193,170.15 and 82,124.10 is: 123,296.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,664.90 : 193,170.15 = 82,124.10 : x
  2. Step 2: Convert to fraction form
    128,664.90/193,170.15 = 82,124.10/x
  3. Step 3: Cross multiply
    128,664.90x = 193,170.15 × 82,124.10
  4. Step 4: Simplify right side
    128,664.90x = 15,863,924,715.62
  5. Step 5: Solve for x
    x = 15,863,924,715.62/128,664.90
  6. Step 6: Final answer
    x = 123,296.44

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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.