Home / 170,481.39-255,355.75-138,316.08

Finding the Fourth Proportional to 170,481.39, 255,355.75 and 138,316.08

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Solution

The fourth proportional to 170,481.39, 255,355.75 and 138,316.08 is: 207,176.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,481.39 : 255,355.75 = 138,316.08 : x
  2. Step 2: Convert to fraction form
    170,481.39/255,355.75 = 138,316.08/x
  3. Step 3: Cross multiply
    170,481.39x = 255,355.75 × 138,316.08
  4. Step 4: Simplify right side
    170,481.39x = 35,319,807,475.94
  5. Step 5: Solve for x
    x = 35,319,807,475.94/170,481.39
  6. Step 6: Final answer
    x = 207,176.91

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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.