Home / 138,469.20-191,087.67-74,807.00

Finding the Fourth Proportional to 138,469.20, 191,087.67 and 74,807.00

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Solution

The fourth proportional to 138,469.20, 191,087.67 and 74,807.00 is: 103,233.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,469.20 : 191,087.67 = 74,807.00 : x
  2. Step 2: Convert to fraction form
    138,469.20/191,087.67 = 74,807.00/x
  3. Step 3: Cross multiply
    138,469.20x = 191,087.67 × 74,807.00
  4. Step 4: Simplify right side
    138,469.20x = 14,294,694,374.25
  5. Step 5: Solve for x
    x = 14,294,694,374.25/138,469.20
  6. Step 6: Final answer
    x = 103,233.75

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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.