Home / 138,922.59-191,642.71-87,849.26

Finding the Fourth Proportional to 138,922.59, 191,642.71 and 87,849.26

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Solution

The fourth proportional to 138,922.59, 191,642.71 and 87,849.26 is: 121,187.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,922.59 : 191,642.71 = 87,849.26 : x
  2. Step 2: Convert to fraction form
    138,922.59/191,642.71 = 87,849.26/x
  3. Step 3: Cross multiply
    138,922.59x = 191,642.71 × 87,849.26
  4. Step 4: Simplify right side
    138,922.59x = 16,835,670,128.15
  5. Step 5: Solve for x
    x = 16,835,670,128.15/138,922.59
  6. Step 6: Final answer
    x = 121,187.42

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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.