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Finding the Fourth Proportional to 115,898.64, 159,921.86 and 67,508.54

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Solution

The fourth proportional to 115,898.64, 159,921.86 and 67,508.54 is: 93,151.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,898.64 : 159,921.86 = 67,508.54 : x
  2. Step 2: Convert to fraction form
    115,898.64/159,921.86 = 67,508.54/x
  3. Step 3: Cross multiply
    115,898.64x = 159,921.86 × 67,508.54
  4. Step 4: Simplify right side
    115,898.64x = 10,796,090,145.53
  5. Step 5: Solve for x
    x = 10,796,090,145.53/115,898.64
  6. Step 6: Final answer
    x = 93,151.14

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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.