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Finding the Fourth Proportional to 119,652.48, 165,121.53 and 65,939.40

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Solution

The fourth proportional to 119,652.48, 165,121.53 and 65,939.40 is: 90,996.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,652.48 : 165,121.53 = 65,939.40 : x
  2. Step 2: Convert to fraction form
    119,652.48/165,121.53 = 65,939.40/x
  3. Step 3: Cross multiply
    119,652.48x = 165,121.53 × 65,939.40
  4. Step 4: Simplify right side
    119,652.48x = 10,888,014,615.28
  5. Step 5: Solve for x
    x = 10,888,014,615.28/119,652.48
  6. Step 6: Final answer
    x = 90,996.98

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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.