Home / 108,231.20-149,405.04-65,803.28

Finding the Fourth Proportional to 108,231.20, 149,405.04 and 65,803.28

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Solution

The fourth proportional to 108,231.20, 149,405.04 and 65,803.28 is: 90,836.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,231.20 : 149,405.04 = 65,803.28 : x
  2. Step 2: Convert to fraction form
    108,231.20/149,405.04 = 65,803.28/x
  3. Step 3: Cross multiply
    108,231.20x = 149,405.04 × 65,803.28
  4. Step 4: Simplify right side
    108,231.20x = 9,831,341,680.53
  5. Step 5: Solve for x
    x = 9,831,341,680.53/108,231.20
  6. Step 6: Final answer
    x = 90,836.48

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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.