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Finding the Fourth Proportional to 163,332.80, 225,385.44 and 91,707.20

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Solution

The fourth proportional to 163,332.80, 225,385.44 and 91,707.20 is: 126,548.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,332.80 : 225,385.44 = 91,707.20 : x
  2. Step 2: Convert to fraction form
    163,332.80/225,385.44 = 91,707.20/x
  3. Step 3: Cross multiply
    163,332.80x = 225,385.44 × 91,707.20
  4. Step 4: Simplify right side
    163,332.80x = 20,669,467,623.17
  5. Step 5: Solve for x
    x = 20,669,467,623.17/163,332.80
  6. Step 6: Final answer
    x = 126,548.17

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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.