Home / 138,922.02-191,712.15-75,261.42

Finding the Fourth Proportional to 138,922.02, 191,712.15 and 75,261.42

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Solution

The fourth proportional to 138,922.02, 191,712.15 and 75,261.42 is: 103,860.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,922.02 : 191,712.15 = 75,261.42 : x
  2. Step 2: Convert to fraction form
    138,922.02/191,712.15 = 75,261.42/x
  3. Step 3: Cross multiply
    138,922.02x = 191,712.15 × 75,261.42
  4. Step 4: Simplify right side
    138,922.02x = 14,428,528,640.25
  5. Step 5: Solve for x
    x = 14,428,528,640.25/138,922.02
  6. Step 6: Final answer
    x = 103,860.63

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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.