Home / 137,712.96-190,094.04-81,171.72

Finding the Fourth Proportional to 137,712.96, 190,094.04 and 81,171.72

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Solution

The fourth proportional to 137,712.96, 190,094.04 and 81,171.72 is: 112,046.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,712.96 : 190,094.04 = 81,171.72 : x
  2. Step 2: Convert to fraction form
    137,712.96/190,094.04 = 81,171.72/x
  3. Step 3: Cross multiply
    137,712.96x = 190,094.04 × 81,171.72
  4. Step 4: Simplify right side
    137,712.96x = 15,430,260,188.55
  5. Step 5: Solve for x
    x = 15,430,260,188.55/137,712.96
  6. Step 6: Final answer
    x = 112,046.54

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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.