Home / 129,867.60-179,222.64-73,278.72

Finding the Fourth Proportional to 129,867.60, 179,222.64 and 73,278.72

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Solution

The fourth proportional to 129,867.60, 179,222.64 and 73,278.72 is: 101,127.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,867.60 : 179,222.64 = 73,278.72 : x
  2. Step 2: Convert to fraction form
    129,867.60/179,222.64 = 73,278.72/x
  3. Step 3: Cross multiply
    129,867.60x = 179,222.64 × 73,278.72
  4. Step 4: Simplify right side
    129,867.60x = 13,133,205,654.22
  5. Step 5: Solve for x
    x = 13,133,205,654.22/129,867.60
  6. Step 6: Final answer
    x = 101,127.65

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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.