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Finding the Fourth Proportional to 159,076.47, 219,523.56 and 87,455.87

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Solution

The fourth proportional to 159,076.47, 219,523.56 and 87,455.87 is: 120,688.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,076.47 : 219,523.56 = 87,455.87 : x
  2. Step 2: Convert to fraction form
    159,076.47/219,523.56 = 87,455.87/x
  3. Step 3: Cross multiply
    159,076.47x = 219,523.56 × 87,455.87
  4. Step 4: Simplify right side
    159,076.47x = 19,198,623,925.30
  5. Step 5: Solve for x
    x = 19,198,623,925.30/159,076.47
  6. Step 6: Final answer
    x = 120,688.02

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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.