Home / 151,531.23-209,137.74-91,162.89

Finding the Fourth Proportional to 151,531.23, 209,137.74 and 91,162.89

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Solution

The fourth proportional to 151,531.23, 209,137.74 and 91,162.89 is: 125,819.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,531.23 : 209,137.74 = 91,162.89 : x
  2. Step 2: Convert to fraction form
    151,531.23/209,137.74 = 91,162.89/x
  3. Step 3: Cross multiply
    151,531.23x = 209,137.74 × 91,162.89
  4. Step 4: Simplify right side
    151,531.23x = 19,065,600,786.47
  5. Step 5: Solve for x
    x = 19,065,600,786.47/151,531.23
  6. Step 6: Final answer
    x = 125,819.61

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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.