Home / 99,431.84-137,218.82-54,112.75

Finding the Fourth Proportional to 99,431.84, 137,218.82 and 54,112.75

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Solution

The fourth proportional to 99,431.84, 137,218.82 and 54,112.75 is: 74,677.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,431.84 : 137,218.82 = 54,112.75 : x
  2. Step 2: Convert to fraction form
    99,431.84/137,218.82 = 54,112.75/x
  3. Step 3: Cross multiply
    99,431.84x = 137,218.82 × 54,112.75
  4. Step 4: Simplify right side
    99,431.84x = 7,425,287,088.34
  5. Step 5: Solve for x
    x = 7,425,287,088.34/99,431.84
  6. Step 6: Final answer
    x = 74,677.15

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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.