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Finding the Fourth Proportional to 101,098.83, 139,491.47 and 61,797.90

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Solution

The fourth proportional to 101,098.83, 139,491.47 and 61,797.90 is: 85,265.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,098.83 : 139,491.47 = 61,797.90 : x
  2. Step 2: Convert to fraction form
    101,098.83/139,491.47 = 61,797.90/x
  3. Step 3: Cross multiply
    101,098.83x = 139,491.47 × 61,797.90
  4. Step 4: Simplify right side
    101,098.83x = 8,620,279,655.41
  5. Step 5: Solve for x
    x = 8,620,279,655.41/101,098.83
  6. Step 6: Final answer
    x = 85,265.87

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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.