Home / 140,563.35-193,979.61-76,902.21

Finding the Fourth Proportional to 140,563.35, 193,979.61 and 76,902.21

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Solution

The fourth proportional to 140,563.35, 193,979.61 and 76,902.21 is: 106,126.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,563.35 : 193,979.61 = 76,902.21 : x
  2. Step 2: Convert to fraction form
    140,563.35/193,979.61 = 76,902.21/x
  3. Step 3: Cross multiply
    140,563.35x = 193,979.61 × 76,902.21
  4. Step 4: Simplify right side
    140,563.35x = 14,917,460,703.94
  5. Step 5: Solve for x
    x = 14,917,460,703.94/140,563.35
  6. Step 6: Final answer
    x = 106,126.25

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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.