Home / 129,741.71-179,039.48-76,062.47

Finding the Fourth Proportional to 129,741.71, 179,039.48 and 76,062.47

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Solution

The fourth proportional to 129,741.71, 179,039.48 and 76,062.47 is: 104,963.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,741.71 : 179,039.48 = 76,062.47 : x
  2. Step 2: Convert to fraction form
    129,741.71/179,039.48 = 76,062.47/x
  3. Step 3: Cross multiply
    129,741.71x = 179,039.48 × 76,062.47
  4. Step 4: Simplify right side
    129,741.71x = 13,618,183,800.81
  5. Step 5: Solve for x
    x = 13,618,183,800.81/129,741.71
  6. Step 6: Final answer
    x = 104,963.81

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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.