Home / 138,973.24-191,783.20-75,310.48

Finding the Fourth Proportional to 138,973.24, 191,783.20 and 75,310.48

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Solution

The fourth proportional to 138,973.24, 191,783.20 and 75,310.48 is: 103,928.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,973.24 : 191,783.20 = 75,310.48 : x
  2. Step 2: Convert to fraction form
    138,973.24/191,783.20 = 75,310.48/x
  3. Step 3: Cross multiply
    138,973.24x = 191,783.20 × 75,310.48
  4. Step 4: Simplify right side
    138,973.24x = 14,443,284,847.94
  5. Step 5: Solve for x
    x = 14,443,284,847.94/138,973.24
  6. Step 6: Final answer
    x = 103,928.53

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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.