Home / 87,163.86-120,312.42-75,354.06

Finding the Fourth Proportional to 87,163.86, 120,312.42 and 75,354.06

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Solution

The fourth proportional to 87,163.86, 120,312.42 and 75,354.06 is: 104,011.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,163.86 : 120,312.42 = 75,354.06 : x
  2. Step 2: Convert to fraction form
    87,163.86/120,312.42 = 75,354.06/x
  3. Step 3: Cross multiply
    87,163.86x = 120,312.42 × 75,354.06
  4. Step 4: Simplify right side
    87,163.86x = 9,066,029,315.43
  5. Step 5: Solve for x
    x = 9,066,029,315.43/87,163.86
  6. Step 6: Final answer
    x = 104,011.33

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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.