Home / 108,182.07-161,989.20-76,420.35

Finding the Fourth Proportional to 108,182.07, 161,989.20 and 76,420.35

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Solution

The fourth proportional to 108,182.07, 161,989.20 and 76,420.35 is: 114,429.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,182.07 : 161,989.20 = 76,420.35 : x
  2. Step 2: Convert to fraction form
    108,182.07/161,989.20 = 76,420.35/x
  3. Step 3: Cross multiply
    108,182.07x = 161,989.20 × 76,420.35
  4. Step 4: Simplify right side
    108,182.07x = 12,379,271,360.22
  5. Step 5: Solve for x
    x = 12,379,271,360.22/108,182.07
  6. Step 6: Final answer
    x = 114,429.97

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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.