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Finding the Fourth Proportional to 140,699.88, 194,165.82 and 77,037.84

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Solution

The fourth proportional to 140,699.88, 194,165.82 and 77,037.84 is: 106,312.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,699.88 : 194,165.82 = 77,037.84 : x
  2. Step 2: Convert to fraction form
    140,699.88/194,165.82 = 77,037.84/x
  3. Step 3: Cross multiply
    140,699.88x = 194,165.82 × 77,037.84
  4. Step 4: Simplify right side
    140,699.88x = 14,958,115,374.63
  5. Step 5: Solve for x
    x = 14,958,115,374.63/140,699.88
  6. Step 6: Final answer
    x = 106,312.21

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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.