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Finding the Fourth Proportional to 109,340.68, 150,838.55 and 63,990.56

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Solution

The fourth proportional to 109,340.68, 150,838.55 and 63,990.56 is: 88,276.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,340.68 : 150,838.55 = 63,990.56 : x
  2. Step 2: Convert to fraction form
    109,340.68/150,838.55 = 63,990.56/x
  3. Step 3: Cross multiply
    109,340.68x = 150,838.55 × 63,990.56
  4. Step 4: Simplify right side
    109,340.68x = 9,652,243,341.23
  5. Step 5: Solve for x
    x = 9,652,243,341.23/109,340.68
  6. Step 6: Final answer
    x = 88,276.78

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.