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Finding the Fourth Proportional to 133,390.58, 183,898.86 and 85,560.89

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Solution

The fourth proportional to 133,390.58, 183,898.86 and 85,560.89 is: 117,958.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,390.58 : 183,898.86 = 85,560.89 : x
  2. Step 2: Convert to fraction form
    133,390.58/183,898.86 = 85,560.89/x
  3. Step 3: Cross multiply
    133,390.58x = 183,898.86 × 85,560.89
  4. Step 4: Simplify right side
    133,390.58x = 15,734,550,131.59
  5. Step 5: Solve for x
    x = 15,734,550,131.59/133,390.58
  6. Step 6: Final answer
    x = 117,958.48

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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.