Home / 138,330.86-190,494.60-120,173.29

Finding the Fourth Proportional to 138,330.86, 190,494.60 and 120,173.29

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Solution

The fourth proportional to 138,330.86, 190,494.60 and 120,173.29 is: 165,489.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,330.86 : 190,494.60 = 120,173.29 : x
  2. Step 2: Convert to fraction form
    138,330.86/190,494.60 = 120,173.29/x
  3. Step 3: Cross multiply
    138,330.86x = 190,494.60 × 120,173.29
  4. Step 4: Simplify right side
    138,330.86x = 22,892,362,596.70
  5. Step 5: Solve for x
    x = 22,892,362,596.70/138,330.86
  6. Step 6: Final answer
    x = 165,489.92

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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.