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Finding the Fourth Proportional to 120,035.86, 165,657.25 and 66,320.86

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Solution

The fourth proportional to 120,035.86, 165,657.25 and 66,320.86 is: 91,527.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,035.86 : 165,657.25 = 66,320.86 : x
  2. Step 2: Convert to fraction form
    120,035.86/165,657.25 = 66,320.86/x
  3. Step 3: Cross multiply
    120,035.86x = 165,657.25 × 66,320.86
  4. Step 4: Simplify right side
    120,035.86x = 10,986,531,285.24
  5. Step 5: Solve for x
    x = 10,986,531,285.24/120,035.86
  6. Step 6: Final answer
    x = 91,527.08

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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.