Home / 140,019.10-193,169.89-81,043.76

Finding the Fourth Proportional to 140,019.10, 193,169.89 and 81,043.76

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Solution

The fourth proportional to 140,019.10, 193,169.89 and 81,043.76 is: 111,807.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,019.10 : 193,169.89 = 81,043.76 : x
  2. Step 2: Convert to fraction form
    140,019.10/193,169.89 = 81,043.76/x
  3. Step 3: Cross multiply
    140,019.10x = 193,169.89 × 81,043.76
  4. Step 4: Simplify right side
    140,019.10x = 15,655,214,204.39
  5. Step 5: Solve for x
    x = 15,655,214,204.39/140,019.10
  6. Step 6: Final answer
    x = 111,807.70

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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.