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Finding the Fourth Proportional to 99,912.76, 149,865.01 and 55,511.19

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Solution

The fourth proportional to 99,912.76, 149,865.01 and 55,511.19 is: 83,264.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,912.76 : 149,865.01 = 55,511.19 : x
  2. Step 2: Convert to fraction form
    99,912.76/149,865.01 = 55,511.19/x
  3. Step 3: Cross multiply
    99,912.76x = 149,865.01 × 55,511.19
  4. Step 4: Simplify right side
    99,912.76x = 8,319,185,044.46
  5. Step 5: Solve for x
    x = 8,319,185,044.46/99,912.76
  6. Step 6: Final answer
    x = 83,264.49

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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.