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Finding the Fourth Proportional to 89,898.76, 134,848.02 and 84,358.36

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Solution

The fourth proportional to 89,898.76, 134,848.02 and 84,358.36 is: 126,537.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,898.76 : 134,848.02 = 84,358.36 : x
  2. Step 2: Convert to fraction form
    89,898.76/134,848.02 = 84,358.36/x
  3. Step 3: Cross multiply
    89,898.76x = 134,848.02 × 84,358.36
  4. Step 4: Simplify right side
    89,898.76x = 11,375,557,816.45
  5. Step 5: Solve for x
    x = 11,375,557,816.45/89,898.76
  6. Step 6: Final answer
    x = 126,537.43

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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.