Home / 126,839.64-190,281.31-42,607.90

Finding the Fourth Proportional to 126,839.64, 190,281.31 and 42,607.90

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Solution

The fourth proportional to 126,839.64, 190,281.31 and 42,607.90 is: 63,919.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,839.64 : 190,281.31 = 42,607.90 : x
  2. Step 2: Convert to fraction form
    126,839.64/190,281.31 = 42,607.90/x
  3. Step 3: Cross multiply
    126,839.64x = 190,281.31 × 42,607.90
  4. Step 4: Simplify right side
    126,839.64x = 8,107,487,028.35
  5. Step 5: Solve for x
    x = 8,107,487,028.35/126,839.64
  6. Step 6: Final answer
    x = 63,919.19

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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.