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Finding the Fourth Proportional to 107,310, 161,070.96 and 80,562.98

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Solution

The fourth proportional to 107,310, 161,070.96 and 80,562.98 is: 120,924.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,310 : 161,070.96 = 80,562.98 : x
  2. Step 2: Convert to fraction form
    107,310/161,070.96 = 80,562.98/x
  3. Step 3: Cross multiply
    107,310x = 161,070.96 × 80,562.98
  4. Step 4: Simplify right side
    107,310x = 12,976,356,529.06
  5. Step 5: Solve for x
    x = 12,976,356,529.06/107,310
  6. Step 6: Final answer
    x = 120,924.02

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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.