Home / 140,450.63-193,821.93-76,788.95

Finding the Fourth Proportional to 140,450.63, 193,821.93 and 76,788.95

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Solution

The fourth proportional to 140,450.63, 193,821.93 and 76,788.95 is: 105,968.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,450.63 : 193,821.93 = 76,788.95 : x
  2. Step 2: Convert to fraction form
    140,450.63/193,821.93 = 76,788.95/x
  3. Step 3: Cross multiply
    140,450.63x = 193,821.93 × 76,788.95
  4. Step 4: Simplify right side
    140,450.63x = 14,883,381,522.56
  5. Step 5: Solve for x
    x = 14,883,381,522.56/140,450.63
  6. Step 6: Final answer
    x = 105,968.78

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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.