Home / 131,119.29-180,917.51-76,660.97

Finding the Fourth Proportional to 131,119.29, 180,917.51 and 76,660.97

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Solution

The fourth proportional to 131,119.29, 180,917.51 and 76,660.97 is: 105,776.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,119.29 : 180,917.51 = 76,660.97 : x
  2. Step 2: Convert to fraction form
    131,119.29/180,917.51 = 76,660.97/x
  3. Step 3: Cross multiply
    131,119.29x = 180,917.51 × 76,660.97
  4. Step 4: Simplify right side
    131,119.29x = 13,869,310,518.69
  5. Step 5: Solve for x
    x = 13,869,310,518.69/131,119.29
  6. Step 6: Final answer
    x = 105,776.28

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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.