Home / 140,572.90-193,991.07-76,910.50

Finding the Fourth Proportional to 140,572.90, 193,991.07 and 76,910.50

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Solution

The fourth proportional to 140,572.90, 193,991.07 and 76,910.50 is: 106,136.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,572.90 : 193,991.07 = 76,910.50 : x
  2. Step 2: Convert to fraction form
    140,572.90/193,991.07 = 76,910.50/x
  3. Step 3: Cross multiply
    140,572.90x = 193,991.07 × 76,910.50
  4. Step 4: Simplify right side
    140,572.90x = 14,919,950,189.24
  5. Step 5: Solve for x
    x = 14,919,950,189.24/140,572.90
  6. Step 6: Final answer
    x = 106,136.75

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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.