Home / 140,309.48-193,623.90-76,647.56

Finding the Fourth Proportional to 140,309.48, 193,623.90 and 76,647.56

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Solution

The fourth proportional to 140,309.48, 193,623.90 and 76,647.56 is: 105,771.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,309.48 : 193,623.90 = 76,647.56 : x
  2. Step 2: Convert to fraction form
    140,309.48/193,623.90 = 76,647.56/x
  3. Step 3: Cross multiply
    140,309.48x = 193,623.90 × 76,647.56
  4. Step 4: Simplify right side
    140,309.48x = 14,840,799,492.68
  5. Step 5: Solve for x
    x = 14,840,799,492.68/140,309.48
  6. Step 6: Final answer
    x = 105,771.89

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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.