Home / 129,787.95-179,145.68-76,084.59

Finding the Fourth Proportional to 129,787.95, 179,145.68 and 76,084.59

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Solution

The fourth proportional to 129,787.95, 179,145.68 and 76,084.59 is: 105,019.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,787.95 : 179,145.68 = 76,084.59 : x
  2. Step 2: Convert to fraction form
    129,787.95/179,145.68 = 76,084.59/x
  3. Step 3: Cross multiply
    129,787.95x = 179,145.68 × 76,084.59
  4. Step 4: Simplify right side
    129,787.95x = 13,630,225,232.65
  5. Step 5: Solve for x
    x = 13,630,225,232.65/129,787.95
  6. Step 6: Final answer
    x = 105,019.19

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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.