Home / 134,782.68-185,939.96-78,161.24

Finding the Fourth Proportional to 134,782.68, 185,939.96 and 78,161.24

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Solution

The fourth proportional to 134,782.68, 185,939.96 and 78,161.24 is: 107,827.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,782.68 : 185,939.96 = 78,161.24 : x
  2. Step 2: Convert to fraction form
    134,782.68/185,939.96 = 78,161.24/x
  3. Step 3: Cross multiply
    134,782.68x = 185,939.96 × 78,161.24
  4. Step 4: Simplify right side
    134,782.68x = 14,533,297,839.15
  5. Step 5: Solve for x
    x = 14,533,297,839.15/134,782.68
  6. Step 6: Final answer
    x = 107,827.64

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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.