Home / 137,839.32-190,238.90-84,155.49

Finding the Fourth Proportional to 137,839.32, 190,238.90 and 84,155.49

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Solution

The fourth proportional to 137,839.32, 190,238.90 and 84,155.49 is: 116,147.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,839.32 : 190,238.90 = 84,155.49 : x
  2. Step 2: Convert to fraction form
    137,839.32/190,238.90 = 84,155.49/x
  3. Step 3: Cross multiply
    137,839.32x = 190,238.90 × 84,155.49
  4. Step 4: Simplify right side
    137,839.32x = 16,009,647,425.78
  5. Step 5: Solve for x
    x = 16,009,647,425.78/137,839.32
  6. Step 6: Final answer
    x = 116,147.17

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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.