Home / 259,880.10-389,845.67-108,045.81

Finding the Fourth Proportional to 259,880.10, 389,845.67 and 108,045.81

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Solution

The fourth proportional to 259,880.10, 389,845.67 and 108,045.81 is: 162,079.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,880.10 : 389,845.67 = 108,045.81 : x
  2. Step 2: Convert to fraction form
    259,880.10/389,845.67 = 108,045.81/x
  3. Step 3: Cross multiply
    259,880.10x = 389,845.67 × 108,045.81
  4. Step 4: Simplify right side
    259,880.10x = 42,121,190,649.91
  5. Step 5: Solve for x
    x = 42,121,190,649.91/259,880.10
  6. Step 6: Final answer
    x = 162,079.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.