Home / 129,997.51-179,404.93-76,262.92

Finding the Fourth Proportional to 129,997.51, 179,404.93 and 76,262.92

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Solution

The fourth proportional to 129,997.51, 179,404.93 and 76,262.92 is: 105,247.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,997.51 : 179,404.93 = 76,262.92 : x
  2. Step 2: Convert to fraction form
    129,997.51/179,404.93 = 76,262.92/x
  3. Step 3: Cross multiply
    129,997.51x = 179,404.93 × 76,262.92
  4. Step 4: Simplify right side
    129,997.51x = 13,681,943,042.03
  5. Step 5: Solve for x
    x = 13,681,943,042.03/129,997.51
  6. Step 6: Final answer
    x = 105,247.73

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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.