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Finding the Fourth Proportional to 107,878.26, 148,941.18 and 69,654.90

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Solution

The fourth proportional to 107,878.26, 148,941.18 and 69,654.90 is: 96,168.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,878.26 : 148,941.18 = 69,654.90 : x
  2. Step 2: Convert to fraction form
    107,878.26/148,941.18 = 69,654.90/x
  3. Step 3: Cross multiply
    107,878.26x = 148,941.18 × 69,654.90
  4. Step 4: Simplify right side
    107,878.26x = 10,374,482,998.78
  5. Step 5: Solve for x
    x = 10,374,482,998.78/107,878.26
  6. Step 6: Final answer
    x = 96,168.43

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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.