Home / 138,862.09-191,629.20-75,200.05

Finding the Fourth Proportional to 138,862.09, 191,629.20 and 75,200.05

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Solution

The fourth proportional to 138,862.09, 191,629.20 and 75,200.05 is: 103,775.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,862.09 : 191,629.20 = 75,200.05 : x
  2. Step 2: Convert to fraction form
    138,862.09/191,629.20 = 75,200.05/x
  3. Step 3: Cross multiply
    138,862.09x = 191,629.20 × 75,200.05
  4. Step 4: Simplify right side
    138,862.09x = 14,410,525,421.46
  5. Step 5: Solve for x
    x = 14,410,525,421.46/138,862.09
  6. Step 6: Final answer
    x = 103,775.81

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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.