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Finding the Fourth Proportional to 104,399.88, 156,468.60 and 74,875.32

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Solution

The fourth proportional to 104,399.88, 156,468.60 and 74,875.32 is: 112,218.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,399.88 : 156,468.60 = 74,875.32 : x
  2. Step 2: Convert to fraction form
    104,399.88/156,468.60 = 74,875.32/x
  3. Step 3: Cross multiply
    104,399.88x = 156,468.60 × 74,875.32
  4. Step 4: Simplify right side
    104,399.88x = 11,715,636,494.95
  5. Step 5: Solve for x
    x = 11,715,636,494.95/104,399.88
  6. Step 6: Final answer
    x = 112,218.87

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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.