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Finding the Fourth Proportional to 140,374.77, 193,717.70 and 76,712.58

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Solution

The fourth proportional to 140,374.77, 193,717.70 and 76,712.58 is: 105,863.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,374.77 : 193,717.70 = 76,712.58 : x
  2. Step 2: Convert to fraction form
    140,374.77/193,717.70 = 76,712.58/x
  3. Step 3: Cross multiply
    140,374.77x = 193,717.70 × 76,712.58
  4. Step 4: Simplify right side
    140,374.77x = 14,860,584,175.10
  5. Step 5: Solve for x
    x = 14,860,584,175.10/140,374.77
  6. Step 6: Final answer
    x = 105,863.64

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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.