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Finding the Fourth Proportional to 116,489.80, 174,864.30 and 72,166.60

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Solution

The fourth proportional to 116,489.80, 174,864.30 and 72,166.60 is: 108,330.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,489.80 : 174,864.30 = 72,166.60 : x
  2. Step 2: Convert to fraction form
    116,489.80/174,864.30 = 72,166.60/x
  3. Step 3: Cross multiply
    116,489.80x = 174,864.30 × 72,166.60
  4. Step 4: Simplify right side
    116,489.80x = 12,619,361,992.38
  5. Step 5: Solve for x
    x = 12,619,361,992.38/116,489.80
  6. Step 6: Final answer
    x = 108,330.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.