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Finding the Fourth Proportional to 136,563.40, 188,350.64 and 88,831.98

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Solution

The fourth proportional to 136,563.40, 188,350.64 and 88,831.98 is: 122,518.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,563.40 : 188,350.64 = 88,831.98 : x
  2. Step 2: Convert to fraction form
    136,563.40/188,350.64 = 88,831.98/x
  3. Step 3: Cross multiply
    136,563.40x = 188,350.64 × 88,831.98
  4. Step 4: Simplify right side
    136,563.40x = 16,731,560,285.47
  5. Step 5: Solve for x
    x = 16,731,560,285.47/136,563.40
  6. Step 6: Final answer
    x = 122,518.63

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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.