Home / 148,831.43-205,391.07-80,848.40

Finding the Fourth Proportional to 148,831.43, 205,391.07 and 80,848.40

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Solution

The fourth proportional to 148,831.43, 205,391.07 and 80,848.40 is: 111,572.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,831.43 : 205,391.07 = 80,848.40 : x
  2. Step 2: Convert to fraction form
    148,831.43/205,391.07 = 80,848.40/x
  3. Step 3: Cross multiply
    148,831.43x = 205,391.07 × 80,848.40
  4. Step 4: Simplify right side
    148,831.43x = 16,605,538,356.83
  5. Step 5: Solve for x
    x = 16,605,538,356.83/148,831.43
  6. Step 6: Final answer
    x = 111,572.80

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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.