Home / 126,841.83-189,970.20-91,080.69

Finding the Fourth Proportional to 126,841.83, 189,970.20 and 91,080.69

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Solution

The fourth proportional to 126,841.83, 189,970.20 and 91,080.69 is: 136,410.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,841.83 : 189,970.20 = 91,080.69 : x
  2. Step 2: Convert to fraction form
    126,841.83/189,970.20 = 91,080.69/x
  3. Step 3: Cross multiply
    126,841.83x = 189,970.20 × 91,080.69
  4. Step 4: Simplify right side
    126,841.83x = 17,302,616,895.44
  5. Step 5: Solve for x
    x = 17,302,616,895.44/126,841.83
  6. Step 6: Final answer
    x = 136,410.97

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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.