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Finding the Fourth Proportional to 104,990.82, 144,845.98 and 64,634.46

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Solution

The fourth proportional to 104,990.82, 144,845.98 and 64,634.46 is: 89,170.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,990.82 : 144,845.98 = 64,634.46 : x
  2. Step 2: Convert to fraction form
    104,990.82/144,845.98 = 64,634.46/x
  3. Step 3: Cross multiply
    104,990.82x = 144,845.98 × 64,634.46
  4. Step 4: Simplify right side
    104,990.82x = 9,362,041,700.47
  5. Step 5: Solve for x
    x = 9,362,041,700.47/104,990.82
  6. Step 6: Final answer
    x = 89,170.10

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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.