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Finding the Fourth Proportional to 161,976.78, 223,525.78 and 90,358.00

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Solution

The fourth proportional to 161,976.78, 223,525.78 and 90,358.00 is: 124,692.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,976.78 : 223,525.78 = 90,358.00 : x
  2. Step 2: Convert to fraction form
    161,976.78/223,525.78 = 90,358.00/x
  3. Step 3: Cross multiply
    161,976.78x = 223,525.78 × 90,358.00
  4. Step 4: Simplify right side
    161,976.78x = 20,197,341,644.53
  5. Step 5: Solve for x
    x = 20,197,341,644.53/161,976.78
  6. Step 6: Final answer
    x = 124,692.82

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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.