Home / 138,862.47-191,629.92-75,200.07

Finding the Fourth Proportional to 138,862.47, 191,629.92 and 75,200.07

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Solution

The fourth proportional to 138,862.47, 191,629.92 and 75,200.07 is: 103,775.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,862.47 : 191,629.92 = 75,200.07 : x
  2. Step 2: Convert to fraction form
    138,862.47/191,629.92 = 75,200.07/x
  3. Step 3: Cross multiply
    138,862.47x = 191,629.92 × 75,200.07
  4. Step 4: Simplify right side
    138,862.47x = 14,410,583,398.09
  5. Step 5: Solve for x
    x = 14,410,583,398.09/138,862.47
  6. Step 6: Final answer
    x = 103,775.94

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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.