Home / 137,976.35-190,265.60-115,306.88

Finding the Fourth Proportional to 137,976.35, 190,265.60 and 115,306.88

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Solution

The fourth proportional to 137,976.35, 190,265.60 and 115,306.88 is: 159,005.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,976.35 : 190,265.60 = 115,306.88 : x
  2. Step 2: Convert to fraction form
    137,976.35/190,265.60 = 115,306.88/x
  3. Step 3: Cross multiply
    137,976.35x = 190,265.60 × 115,306.88
  4. Step 4: Simplify right side
    137,976.35x = 21,938,932,130.79
  5. Step 5: Solve for x
    x = 21,938,932,130.79/137,976.35
  6. Step 6: Final answer
    x = 159,005.02

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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.