Home / 107,820.40-161,730.60-55,212.40

Finding the Fourth Proportional to 107,820.40, 161,730.60 and 55,212.40

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Solution

The fourth proportional to 107,820.40, 161,730.60 and 55,212.40 is: 82,818.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,820.40 : 161,730.60 = 55,212.40 : x
  2. Step 2: Convert to fraction form
    107,820.40/161,730.60 = 55,212.40/x
  3. Step 3: Cross multiply
    107,820.40x = 161,730.60 × 55,212.40
  4. Step 4: Simplify right side
    107,820.40x = 8,929,534,579.44
  5. Step 5: Solve for x
    x = 8,929,534,579.44/107,820.40
  6. Step 6: Final answer
    x = 82,818.60

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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.