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Finding the Fourth Proportional to 133,838.39, 184,729.31 and 90,889.58

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Solution

The fourth proportional to 133,838.39, 184,729.31 and 90,889.58 is: 125,449.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,838.39 : 184,729.31 = 90,889.58 : x
  2. Step 2: Convert to fraction form
    133,838.39/184,729.31 = 90,889.58/x
  3. Step 3: Cross multiply
    133,838.39x = 184,729.31 × 90,889.58
  4. Step 4: Simplify right side
    133,838.39x = 16,789,968,021.50
  5. Step 5: Solve for x
    x = 16,789,968,021.50/133,838.39
  6. Step 6: Final answer
    x = 125,449.57

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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.