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Finding the Fourth Proportional to 140,601.80, 210,902.70 and 45,831.80

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Solution

The fourth proportional to 140,601.80, 210,902.70 and 45,831.80 is: 68,747.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,601.80 : 210,902.70 = 45,831.80 : x
  2. Step 2: Convert to fraction form
    140,601.80/210,902.70 = 45,831.80/x
  3. Step 3: Cross multiply
    140,601.80x = 210,902.70 × 45,831.80
  4. Step 4: Simplify right side
    140,601.80x = 9,666,050,365.86
  5. Step 5: Solve for x
    x = 9,666,050,365.86/140,601.80
  6. Step 6: Final answer
    x = 68,747.70

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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.