Home / 130,057.76-179,498.78-76,372.18

Finding the Fourth Proportional to 130,057.76, 179,498.78 and 76,372.18

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Solution

The fourth proportional to 130,057.76, 179,498.78 and 76,372.18 is: 105,404.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,057.76 : 179,498.78 = 76,372.18 : x
  2. Step 2: Convert to fraction form
    130,057.76/179,498.78 = 76,372.18/x
  3. Step 3: Cross multiply
    130,057.76x = 179,498.78 × 76,372.18
  4. Step 4: Simplify right side
    130,057.76x = 13,708,713,135.94
  5. Step 5: Solve for x
    x = 13,708,713,135.94/130,057.76
  6. Step 6: Final answer
    x = 105,404.81

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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.