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Finding the Fourth Proportional to 159,320.34, 219,836.76 and 91,324.32

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Solution

The fourth proportional to 159,320.34, 219,836.76 and 91,324.32 is: 126,013.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,320.34 : 219,836.76 = 91,324.32 : x
  2. Step 2: Convert to fraction form
    159,320.34/219,836.76 = 91,324.32/x
  3. Step 3: Cross multiply
    159,320.34x = 219,836.76 × 91,324.32
  4. Step 4: Simplify right side
    159,320.34x = 20,076,442,618.00
  5. Step 5: Solve for x
    x = 20,076,442,618.00/159,320.34
  6. Step 6: Final answer
    x = 126,013.05

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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.