Home / 87,359.86-120,389.83-75,256.54

Finding the Fourth Proportional to 87,359.86, 120,389.83 and 75,256.54

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Solution

The fourth proportional to 87,359.86, 120,389.83 and 75,256.54 is: 103,710.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,359.86 : 120,389.83 = 75,256.54 : x
  2. Step 2: Convert to fraction form
    87,359.86/120,389.83 = 75,256.54/x
  3. Step 3: Cross multiply
    87,359.86x = 120,389.83 × 75,256.54
  4. Step 4: Simplify right side
    87,359.86x = 9,060,121,567.87
  5. Step 5: Solve for x
    x = 9,060,121,567.87/87,359.86
  6. Step 6: Final answer
    x = 103,710.35

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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.