Home / 121,831.92-168,127.47-68,116.77

Finding the Fourth Proportional to 121,831.92, 168,127.47 and 68,116.77

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Solution

The fourth proportional to 121,831.92, 168,127.47 and 68,116.77 is: 94,000.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,831.92 : 168,127.47 = 68,116.77 : x
  2. Step 2: Convert to fraction form
    121,831.92/168,127.47 = 68,116.77/x
  3. Step 3: Cross multiply
    121,831.92x = 168,127.47 × 68,116.77
  4. Step 4: Simplify right side
    121,831.92x = 11,452,300,204.67
  5. Step 5: Solve for x
    x = 11,452,300,204.67/121,831.92
  6. Step 6: Final answer
    x = 94,000.82

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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.