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Finding the Fourth Proportional to 99,460.88, 137,259.08 and 54,141.90

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Solution

The fourth proportional to 99,460.88, 137,259.08 and 54,141.90 is: 74,717.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,460.88 : 137,259.08 = 54,141.90 : x
  2. Step 2: Convert to fraction form
    99,460.88/137,259.08 = 54,141.90/x
  3. Step 3: Cross multiply
    99,460.88x = 137,259.08 × 54,141.90
  4. Step 4: Simplify right side
    99,460.88x = 7,431,467,112.74
  5. Step 5: Solve for x
    x = 7,431,467,112.74/99,460.88
  6. Step 6: Final answer
    x = 74,717.49

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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.