Home / 129,766.42-179,077.80-76,040.74

Finding the Fourth Proportional to 129,766.42, 179,077.80 and 76,040.74

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Solution

The fourth proportional to 129,766.42, 179,077.80 and 76,040.74 is: 104,936.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,766.42 : 179,077.80 = 76,040.74 : x
  2. Step 2: Convert to fraction form
    129,766.42/179,077.80 = 76,040.74/x
  3. Step 3: Cross multiply
    129,766.42x = 179,077.80 × 76,040.74
  4. Step 4: Simplify right side
    129,766.42x = 13,617,208,429.57
  5. Step 5: Solve for x
    x = 13,617,208,429.57/129,766.42
  6. Step 6: Final answer
    x = 104,936.30

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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.