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Finding the Fourth Proportional to 126,355.88, 174,298.02 and 81,643.88

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Solution

The fourth proportional to 126,355.88, 174,298.02 and 81,643.88 is: 112,621.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,355.88 : 174,298.02 = 81,643.88 : x
  2. Step 2: Convert to fraction form
    126,355.88/174,298.02 = 81,643.88/x
  3. Step 3: Cross multiply
    126,355.88x = 174,298.02 × 81,643.88
  4. Step 4: Simplify right side
    126,355.88x = 14,230,366,629.12
  5. Step 5: Solve for x
    x = 14,230,366,629.12/126,355.88
  6. Step 6: Final answer
    x = 112,621.33

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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.