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Finding the Fourth Proportional to 99,696.49, 137,503.35 and 63,889.83

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Solution

The fourth proportional to 99,696.49, 137,503.35 and 63,889.83 is: 88,118.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,696.49 : 137,503.35 = 63,889.83 : x
  2. Step 2: Convert to fraction form
    99,696.49/137,503.35 = 63,889.83/x
  3. Step 3: Cross multiply
    99,696.49x = 137,503.35 × 63,889.83
  4. Step 4: Simplify right side
    99,696.49x = 8,785,065,655.93
  5. Step 5: Solve for x
    x = 8,785,065,655.93/99,696.49
  6. Step 6: Final answer
    x = 88,118.10

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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.