Home / 140,431.40-193,795.40-76,769.20

Finding the Fourth Proportional to 140,431.40, 193,795.40 and 76,769.20

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Solution

The fourth proportional to 140,431.40, 193,795.40 and 76,769.20 is: 105,941.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,431.40 : 193,795.40 = 76,769.20 : x
  2. Step 2: Convert to fraction form
    140,431.40/193,795.40 = 76,769.20/x
  3. Step 3: Cross multiply
    140,431.40x = 193,795.40 × 76,769.20
  4. Step 4: Simplify right side
    140,431.40x = 14,877,517,821.68
  5. Step 5: Solve for x
    x = 14,877,517,821.68/140,431.40
  6. Step 6: Final answer
    x = 105,941.53

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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.