Home / 88,705.10-133,057.65-81,998.30

Finding the Fourth Proportional to 88,705.10, 133,057.65 and 81,998.30

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Solution

The fourth proportional to 88,705.10, 133,057.65 and 81,998.30 is: 122,997.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,705.10 : 133,057.65 = 81,998.30 : x
  2. Step 2: Convert to fraction form
    88,705.10/133,057.65 = 81,998.30/x
  3. Step 3: Cross multiply
    88,705.10x = 133,057.65 × 81,998.30
  4. Step 4: Simplify right side
    88,705.10x = 10,910,501,102.00
  5. Step 5: Solve for x
    x = 10,910,501,102.00/88,705.10
  6. Step 6: Final answer
    x = 122,997.45

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Double scale
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Similar ratio
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1.5x scale

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.