Home / 129,787.96-179,091.12-76,060.68

Finding the Fourth Proportional to 129,787.96, 179,091.12 and 76,060.68

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Solution

The fourth proportional to 129,787.96, 179,091.12 and 76,060.68 is: 104,954.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,787.96 : 179,091.12 = 76,060.68 : x
  2. Step 2: Convert to fraction form
    129,787.96/179,091.12 = 76,060.68/x
  3. Step 3: Cross multiply
    129,787.96x = 179,091.12 × 76,060.68
  4. Step 4: Simplify right side
    129,787.96x = 13,621,792,369.16
  5. Step 5: Solve for x
    x = 13,621,792,369.16/129,787.96
  6. Step 6: Final answer
    x = 104,954.21

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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.