Home / 210,372.41-290,336.78-129,797.87

Finding the Fourth Proportional to 210,372.41, 290,336.78 and 129,797.87

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Solution

The fourth proportional to 210,372.41, 290,336.78 and 129,797.87 is: 179,135.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,372.41 : 290,336.78 = 129,797.87 : x
  2. Step 2: Convert to fraction form
    210,372.41/290,336.78 = 129,797.87/x
  3. Step 3: Cross multiply
    210,372.41x = 290,336.78 × 129,797.87
  4. Step 4: Simplify right side
    210,372.41x = 37,685,094,499.47
  5. Step 5: Solve for x
    x = 37,685,094,499.47/210,372.41
  6. Step 6: Final answer
    x = 179,135.15

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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.