Home / 140,564.85-193,979.25-76,902.50

Finding the Fourth Proportional to 140,564.85, 193,979.25 and 76,902.50

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Solution

The fourth proportional to 140,564.85, 193,979.25 and 76,902.50 is: 106,125.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,564.85 : 193,979.25 = 76,902.50 : x
  2. Step 2: Convert to fraction form
    140,564.85/193,979.25 = 76,902.50/x
  3. Step 3: Cross multiply
    140,564.85x = 193,979.25 × 76,902.50
  4. Step 4: Simplify right side
    140,564.85x = 14,917,488,303.23
  5. Step 5: Solve for x
    x = 14,917,488,303.23/140,564.85
  6. Step 6: Final answer
    x = 106,125.31

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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.