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Finding the Fourth Proportional to 99,605.78, 137,452.48 and 54,282.84

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Solution

The fourth proportional to 99,605.78, 137,452.48 and 54,282.84 is: 74,908.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,605.78 : 137,452.48 = 54,282.84 : x
  2. Step 2: Convert to fraction form
    99,605.78/137,452.48 = 54,282.84/x
  3. Step 3: Cross multiply
    99,605.78x = 137,452.48 × 54,282.84
  4. Step 4: Simplify right side
    99,605.78x = 7,461,310,979.44
  5. Step 5: Solve for x
    x = 7,461,310,979.44/99,605.78
  6. Step 6: Final answer
    x = 74,908.41

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1.5x scale

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.