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Finding the Fourth Proportional to 129,899, 179,260.74 and 73,309.16

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Solution

The fourth proportional to 129,899, 179,260.74 and 73,309.16 is: 101,166.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,899 : 179,260.74 = 73,309.16 : x
  2. Step 2: Convert to fraction form
    129,899/179,260.74 = 73,309.16/x
  3. Step 3: Cross multiply
    129,899x = 179,260.74 × 73,309.16
  4. Step 4: Simplify right side
    129,899x = 13,141,454,270.38
  5. Step 5: Solve for x
    x = 13,141,454,270.38/129,899
  6. Step 6: Final answer
    x = 101,166.71

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1.5x scale

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.