Home / 231,128.80-346,790.40-126,023.20

Finding the Fourth Proportional to 231,128.80, 346,790.40 and 126,023.20

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Solution

The fourth proportional to 231,128.80, 346,790.40 and 126,023.20 is: 189,087.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,128.80 : 346,790.40 = 126,023.20 : x
  2. Step 2: Convert to fraction form
    231,128.80/346,790.40 = 126,023.20/x
  3. Step 3: Cross multiply
    231,128.80x = 346,790.40 × 126,023.20
  4. Step 4: Simplify right side
    231,128.80x = 43,703,635,937.28
  5. Step 5: Solve for x
    x = 43,703,635,937.28/231,128.80
  6. Step 6: Final answer
    x = 189,087.80

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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.