Home / 109,163.20-163,831.20-42,635.20

Finding the Fourth Proportional to 109,163.20, 163,831.20 and 42,635.20

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Solution

The fourth proportional to 109,163.20, 163,831.20 and 42,635.20 is: 63,986.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,163.20 : 163,831.20 = 42,635.20 : x
  2. Step 2: Convert to fraction form
    109,163.20/163,831.20 = 42,635.20/x
  3. Step 3: Cross multiply
    109,163.20x = 163,831.20 × 42,635.20
  4. Step 4: Simplify right side
    109,163.20x = 6,984,975,978.24
  5. Step 5: Solve for x
    x = 6,984,975,978.24/109,163.20
  6. Step 6: Final answer
    x = 63,986.54

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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.