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Finding the Fourth Proportional to 116,874, 161,276.36 and 65,187.90

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Solution

The fourth proportional to 116,874, 161,276.36 and 65,187.90 is: 89,953.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,874 : 161,276.36 = 65,187.90 : x
  2. Step 2: Convert to fraction form
    116,874/161,276.36 = 65,187.90/x
  3. Step 3: Cross multiply
    116,874x = 161,276.36 × 65,187.90
  4. Step 4: Simplify right side
    116,874x = 10,513,267,228.04
  5. Step 5: Solve for x
    x = 10,513,267,228.04/116,874
  6. Step 6: Final answer
    x = 89,953.86

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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.