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Finding the Fourth Proportional to 161,655.86, 223,092.01 and 90,035.90

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Solution

The fourth proportional to 161,655.86, 223,092.01 and 90,035.90 is: 124,253.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,655.86 : 223,092.01 = 90,035.90 : x
  2. Step 2: Convert to fraction form
    161,655.86/223,092.01 = 90,035.90/x
  3. Step 3: Cross multiply
    161,655.86x = 223,092.01 × 90,035.90
  4. Step 4: Simplify right side
    161,655.86x = 20,086,289,903.16
  5. Step 5: Solve for x
    x = 20,086,289,903.16/161,655.86
  6. Step 6: Final answer
    x = 124,253.40

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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.