Home / 137,879.12-190,265.87-77,452.31

Finding the Fourth Proportional to 137,879.12, 190,265.87 and 77,452.31

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Solution

The fourth proportional to 137,879.12, 190,265.87 and 77,452.31 is: 106,880.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,879.12 : 190,265.87 = 77,452.31 : x
  2. Step 2: Convert to fraction form
    137,879.12/190,265.87 = 77,452.31/x
  3. Step 3: Cross multiply
    137,879.12x = 190,265.87 × 77,452.31
  4. Step 4: Simplify right side
    137,879.12x = 14,736,530,387.96
  5. Step 5: Solve for x
    x = 14,736,530,387.96/137,879.12
  6. Step 6: Final answer
    x = 106,880.08

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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.