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Finding the Fourth Proportional to 161,992.35, 223,564.95 and 90,379.02

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Solution

The fourth proportional to 161,992.35, 223,564.95 and 90,379.02 is: 124,731.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,992.35 : 223,564.95 = 90,379.02 : x
  2. Step 2: Convert to fraction form
    161,992.35/223,564.95 = 90,379.02/x
  3. Step 3: Cross multiply
    161,992.35x = 223,564.95 × 90,379.02
  4. Step 4: Simplify right side
    161,992.35x = 20,205,581,087.35
  5. Step 5: Solve for x
    x = 20,205,581,087.35/161,992.35
  6. Step 6: Final answer
    x = 124,731.70

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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.