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Finding the Fourth Proportional to 104,876, 144,736.80 and 64,579.76

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Solution

The fourth proportional to 104,876, 144,736.80 and 64,579.76 is: 89,124.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,876 : 144,736.80 = 64,579.76 : x
  2. Step 2: Convert to fraction form
    104,876/144,736.80 = 64,579.76/x
  3. Step 3: Cross multiply
    104,876x = 144,736.80 × 64,579.76
  4. Step 4: Simplify right side
    104,876x = 9,347,067,807.17
  5. Step 5: Solve for x
    x = 9,347,067,807.17/104,876
  6. Step 6: Final answer
    x = 89,124.95

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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.