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Finding the Fourth Proportional to 153,994.80, 231,121.80 and 75,176.40

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Solution

The fourth proportional to 153,994.80, 231,121.80 and 75,176.40 is: 112,827.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,994.80 : 231,121.80 = 75,176.40 : x
  2. Step 2: Convert to fraction form
    153,994.80/231,121.80 = 75,176.40/x
  3. Step 3: Cross multiply
    153,994.80x = 231,121.80 × 75,176.40
  4. Step 4: Simplify right side
    153,994.80x = 17,374,904,885.52
  5. Step 5: Solve for x
    x = 17,374,904,885.52/153,994.80
  6. Step 6: Final answer
    x = 112,827.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.