Home / 155,906.45-215,157.17-87,001.94

Finding the Fourth Proportional to 155,906.45, 215,157.17 and 87,001.94

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Solution

The fourth proportional to 155,906.45, 215,157.17 and 87,001.94 is: 120,066.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,906.45 : 215,157.17 = 87,001.94 : x
  2. Step 2: Convert to fraction form
    155,906.45/215,157.17 = 87,001.94/x
  3. Step 3: Cross multiply
    155,906.45x = 215,157.17 × 87,001.94
  4. Step 4: Simplify right side
    155,906.45x = 18,719,090,759.90
  5. Step 5: Solve for x
    x = 18,719,090,759.90/155,906.45
  6. Step 6: Final answer
    x = 120,066.17

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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.