Home / 112,775.56-168,695.82-85,918.33

Finding the Fourth Proportional to 112,775.56, 168,695.82 and 85,918.33

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Solution

The fourth proportional to 112,775.56, 168,695.82 and 85,918.33 is: 128,521.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,775.56 : 168,695.82 = 85,918.33 : x
  2. Step 2: Convert to fraction form
    112,775.56/168,695.82 = 85,918.33/x
  3. Step 3: Cross multiply
    112,775.56x = 168,695.82 × 85,918.33
  4. Step 4: Simplify right side
    112,775.56x = 14,494,063,132.38
  5. Step 5: Solve for x
    x = 14,494,063,132.38/112,775.56
  6. Step 6: Final answer
    x = 128,521.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.