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Finding the Fourth Proportional to 163,306, 225,345 and 91,694.08

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Solution

The fourth proportional to 163,306, 225,345 and 91,694.08 is: 126,528.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,306 : 225,345 = 91,694.08 : x
  2. Step 2: Convert to fraction form
    163,306/225,345 = 91,694.08/x
  3. Step 3: Cross multiply
    163,306x = 225,345 × 91,694.08
  4. Step 4: Simplify right side
    163,306x = 20,662,802,457.60
  5. Step 5: Solve for x
    x = 20,662,802,457.60/163,306
  6. Step 6: Final answer
    x = 126,528.13

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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.