Home / 138,821.60-191,896.64-123,862.52

Finding the Fourth Proportional to 138,821.60, 191,896.64 and 123,862.52

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Solution

The fourth proportional to 138,821.60, 191,896.64 and 123,862.52 is: 171,218.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,821.60 : 191,896.64 = 123,862.52 : x
  2. Step 2: Convert to fraction form
    138,821.60/191,896.64 = 123,862.52/x
  3. Step 3: Cross multiply
    138,821.60x = 191,896.64 × 123,862.52
  4. Step 4: Simplify right side
    138,821.60x = 23,768,801,409.93
  5. Step 5: Solve for x
    x = 23,768,801,409.93/138,821.60
  6. Step 6: Final answer
    x = 171,218.32

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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.