Home / 129,723.19-179,020.73-73,134.56

Finding the Fourth Proportional to 129,723.19, 179,020.73 and 73,134.56

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Solution

The fourth proportional to 129,723.19, 179,020.73 and 73,134.56 is: 100,927.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,723.19 : 179,020.73 = 73,134.56 : x
  2. Step 2: Convert to fraction form
    129,723.19/179,020.73 = 73,134.56/x
  3. Step 3: Cross multiply
    129,723.19x = 179,020.73 × 73,134.56
  4. Step 4: Simplify right side
    129,723.19x = 13,092,602,949.82
  5. Step 5: Solve for x
    x = 13,092,602,949.82/129,723.19
  6. Step 6: Final answer
    x = 100,927.24

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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.