Home / 108,531.40-162,878.10-55,913.80

Finding the Fourth Proportional to 108,531.40, 162,878.10 and 55,913.80

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Solution

The fourth proportional to 108,531.40, 162,878.10 and 55,913.80 is: 83,912.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,531.40 : 162,878.10 = 55,913.80 : x
  2. Step 2: Convert to fraction form
    108,531.40/162,878.10 = 55,913.80/x
  3. Step 3: Cross multiply
    108,531.40x = 162,878.10 × 55,913.80
  4. Step 4: Simplify right side
    108,531.40x = 9,107,133,507.78
  5. Step 5: Solve for x
    x = 9,107,133,507.78/108,531.40
  6. Step 6: Final answer
    x = 83,912.43

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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.