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Finding the Fourth Proportional to 99,554.88, 137,375.72 and 61,308.28

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Solution

The fourth proportional to 99,554.88, 137,375.72 and 61,308.28 is: 84,599.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,554.88 : 137,375.72 = 61,308.28 : x
  2. Step 2: Convert to fraction form
    99,554.88/137,375.72 = 61,308.28/x
  3. Step 3: Cross multiply
    99,554.88x = 137,375.72 × 61,308.28
  4. Step 4: Simplify right side
    99,554.88x = 8,422,269,106.96
  5. Step 5: Solve for x
    x = 8,422,269,106.96/99,554.88
  6. Step 6: Final answer
    x = 84,599.26

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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.