Home / 108,138.16-162,242.02-51,982.36

Finding the Fourth Proportional to 108,138.16, 162,242.02 and 51,982.36

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Solution

The fourth proportional to 108,138.16, 162,242.02 and 51,982.36 is: 77,990.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,138.16 : 162,242.02 = 51,982.36 : x
  2. Step 2: Convert to fraction form
    108,138.16/162,242.02 = 51,982.36/x
  3. Step 3: Cross multiply
    108,138.16x = 162,242.02 × 51,982.36
  4. Step 4: Simplify right side
    108,138.16x = 8,433,723,090.77
  5. Step 5: Solve for x
    x = 8,433,723,090.77/108,138.16
  6. Step 6: Final answer
    x = 77,990.26

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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.