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Finding the Fourth Proportional to 136,223.67, 187,989.60 and 75,796.86

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Solution

The fourth proportional to 136,223.67, 187,989.60 and 75,796.86 is: 104,600.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,223.67 : 187,989.60 = 75,796.86 : x
  2. Step 2: Convert to fraction form
    136,223.67/187,989.60 = 75,796.86/x
  3. Step 3: Cross multiply
    136,223.67x = 187,989.60 × 75,796.86
  4. Step 4: Simplify right side
    136,223.67x = 14,249,021,392.66
  5. Step 5: Solve for x
    x = 14,249,021,392.66/136,223.67
  6. Step 6: Final answer
    x = 104,600.19

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1.5x scale

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.