Home / 129,788.20-179,146.02-76,084.84

Finding the Fourth Proportional to 129,788.20, 179,146.02 and 76,084.84

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Solution

The fourth proportional to 129,788.20, 179,146.02 and 76,084.84 is: 105,019.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,788.20 : 179,146.02 = 76,084.84 : x
  2. Step 2: Convert to fraction form
    129,788.20/179,146.02 = 76,084.84/x
  3. Step 3: Cross multiply
    129,788.20x = 179,146.02 × 76,084.84
  4. Step 4: Simplify right side
    129,788.20x = 13,630,296,268.34
  5. Step 5: Solve for x
    x = 13,630,296,268.34/129,788.20
  6. Step 6: Final answer
    x = 105,019.53

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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.