Home / 131,776.96-181,778.42-78,009.58

Finding the Fourth Proportional to 131,776.96, 181,778.42 and 78,009.58

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Solution

The fourth proportional to 131,776.96, 181,778.42 and 78,009.58 is: 107,609.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,776.96 : 181,778.42 = 78,009.58 : x
  2. Step 2: Convert to fraction form
    131,776.96/181,778.42 = 78,009.58/x
  3. Step 3: Cross multiply
    131,776.96x = 181,778.42 × 78,009.58
  4. Step 4: Simplify right side
    131,776.96x = 14,180,458,197.26
  5. Step 5: Solve for x
    x = 14,180,458,197.26/131,776.96
  6. Step 6: Final answer
    x = 107,609.54

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1.5x scale

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.