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Finding the Fourth Proportional to 141,878.76, 195,787.65 and 77,346.66

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Solution

The fourth proportional to 141,878.76, 195,787.65 and 77,346.66 is: 106,735.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,878.76 : 195,787.65 = 77,346.66 : x
  2. Step 2: Convert to fraction form
    141,878.76/195,787.65 = 77,346.66/x
  3. Step 3: Cross multiply
    141,878.76x = 195,787.65 × 77,346.66
  4. Step 4: Simplify right side
    141,878.76x = 15,143,520,796.75
  5. Step 5: Solve for x
    x = 15,143,520,796.75/141,878.76
  6. Step 6: Final answer
    x = 106,735.64

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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.