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Finding the Fourth Proportional to 104,137.60, 143,710.08 and 61,717.12

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Solution

The fourth proportional to 104,137.60, 143,710.08 and 61,717.12 is: 85,169.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,137.60 : 143,710.08 = 61,717.12 : x
  2. Step 2: Convert to fraction form
    104,137.60/143,710.08 = 61,717.12/x
  3. Step 3: Cross multiply
    104,137.60x = 143,710.08 × 61,717.12
  4. Step 4: Simplify right side
    104,137.60x = 8,869,372,252.57
  5. Step 5: Solve for x
    x = 8,869,372,252.57/104,137.60
  6. Step 6: Final answer
    x = 85,169.74

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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.