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Finding the Fourth Proportional to 99,466.60, 137,265.65 and 54,145.88

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Solution

The fourth proportional to 99,466.60, 137,265.65 and 54,145.88 is: 74,722.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,466.60 : 137,265.65 = 54,145.88 : x
  2. Step 2: Convert to fraction form
    99,466.60/137,265.65 = 54,145.88/x
  3. Step 3: Cross multiply
    99,466.60x = 137,265.65 × 54,145.88
  4. Step 4: Simplify right side
    99,466.60x = 7,432,369,413.02
  5. Step 5: Solve for x
    x = 7,432,369,413.02/99,466.60
  6. Step 6: Final answer
    x = 74,722.26

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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.