Home / 87,856.86-121,151.85-75,152.10

Finding the Fourth Proportional to 87,856.86, 121,151.85 and 75,152.10

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Solution

The fourth proportional to 87,856.86, 121,151.85 and 75,152.10 is: 103,632.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,856.86 : 121,151.85 = 75,152.10 : x
  2. Step 2: Convert to fraction form
    87,856.86/121,151.85 = 75,152.10/x
  3. Step 3: Cross multiply
    87,856.86x = 121,151.85 × 75,152.10
  4. Step 4: Simplify right side
    87,856.86x = 9,104,816,118.88
  5. Step 5: Solve for x
    x = 9,104,816,118.88/87,856.86
  6. Step 6: Final answer
    x = 103,632.38

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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.