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Finding the Fourth Proportional to 89,897.76, 134,846.52 and 84,357.36

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Solution

The fourth proportional to 89,897.76, 134,846.52 and 84,357.36 is: 126,535.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,897.76 : 134,846.52 = 84,357.36 : x
  2. Step 2: Convert to fraction form
    89,897.76/134,846.52 = 84,357.36/x
  3. Step 3: Cross multiply
    89,897.76x = 134,846.52 × 84,357.36
  4. Step 4: Simplify right side
    89,897.76x = 11,375,296,432.39
  5. Step 5: Solve for x
    x = 11,375,296,432.39/89,897.76
  6. Step 6: Final answer
    x = 126,535.93

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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.