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Finding the Fourth Proportional to 153,990.52, 231,007.66 and 47,383.32

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Solution

The fourth proportional to 153,990.52, 231,007.66 and 47,383.32 is: 71,081.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,990.52 : 231,007.66 = 47,383.32 : x
  2. Step 2: Convert to fraction form
    153,990.52/231,007.66 = 47,383.32/x
  3. Step 3: Cross multiply
    153,990.52x = 231,007.66 × 47,383.32
  4. Step 4: Simplify right side
    153,990.52x = 10,945,909,876.23
  5. Step 5: Solve for x
    x = 10,945,909,876.23/153,990.52
  6. Step 6: Final answer
    x = 71,081.71

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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.