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Finding the Fourth Proportional to 163,587.77, 225,747.89 and 90,989.10

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Solution

The fourth proportional to 163,587.77, 225,747.89 and 90,989.10 is: 125,563.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,587.77 : 225,747.89 = 90,989.10 : x
  2. Step 2: Convert to fraction form
    163,587.77/225,747.89 = 90,989.10/x
  3. Step 3: Cross multiply
    163,587.77x = 225,747.89 × 90,989.10
  4. Step 4: Simplify right side
    163,587.77x = 20,540,597,338.00
  5. Step 5: Solve for x
    x = 20,540,597,338.00/163,587.77
  6. Step 6: Final answer
    x = 125,563.16

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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.