Home / 100,831.96-151,328.58-45,432.28

Finding the Fourth Proportional to 100,831.96, 151,328.58 and 45,432.28

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Solution

The fourth proportional to 100,831.96, 151,328.58 and 45,432.28 is: 68,184.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,831.96 : 151,328.58 = 45,432.28 : x
  2. Step 2: Convert to fraction form
    100,831.96/151,328.58 = 45,432.28/x
  3. Step 3: Cross multiply
    100,831.96x = 151,328.58 × 45,432.28
  4. Step 4: Simplify right side
    100,831.96x = 6,875,202,418.56
  5. Step 5: Solve for x
    x = 6,875,202,418.56/100,831.96
  6. Step 6: Final answer
    x = 68,184.75

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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.