Home / 111,331.10-166,705.05-81,587.90

Finding the Fourth Proportional to 111,331.10, 166,705.05 and 81,587.90

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Solution

The fourth proportional to 111,331.10, 166,705.05 and 81,587.90 is: 122,168.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,331.10 : 166,705.05 = 81,587.90 : x
  2. Step 2: Convert to fraction form
    111,331.10/166,705.05 = 81,587.90/x
  3. Step 3: Cross multiply
    111,331.10x = 166,705.05 × 81,587.90
  4. Step 4: Simplify right side
    111,331.10x = 13,601,114,948.90
  5. Step 5: Solve for x
    x = 13,601,114,948.90/111,331.10
  6. Step 6: Final answer
    x = 122,168.15

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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.