Home / 121,228.91-181,831.91-57,172.18

Finding the Fourth Proportional to 121,228.91, 181,831.91 and 57,172.18

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Solution

The fourth proportional to 121,228.91, 181,831.91 and 57,172.18 is: 85,752.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,228.91 : 181,831.91 = 57,172.18 : x
  2. Step 2: Convert to fraction form
    121,228.91/181,831.91 = 57,172.18/x
  3. Step 3: Cross multiply
    121,228.91x = 181,831.91 × 57,172.18
  4. Step 4: Simplify right side
    121,228.91x = 10,395,726,688.26
  5. Step 5: Solve for x
    x = 10,395,726,688.26/121,228.91
  6. Step 6: Final answer
    x = 85,752.87

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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.