Home / 148,831.20-205,383.60-85,183.20

Finding the Fourth Proportional to 148,831.20, 205,383.60 and 85,183.20

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Solution

The fourth proportional to 148,831.20, 205,383.60 and 85,183.20 is: 117,550.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,831.20 : 205,383.60 = 85,183.20 : x
  2. Step 2: Convert to fraction form
    148,831.20/205,383.60 = 85,183.20/x
  3. Step 3: Cross multiply
    148,831.20x = 205,383.60 × 85,183.20
  4. Step 4: Simplify right side
    148,831.20x = 17,495,232,275.52
  5. Step 5: Solve for x
    x = 17,495,232,275.52/148,831.20
  6. Step 6: Final answer
    x = 117,550.84

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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.