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Finding the Fourth Proportional to 133,342.98, 183,926.61 and 85,520.58

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Solution

The fourth proportional to 133,342.98, 183,926.61 and 85,520.58 is: 117,962.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,342.98 : 183,926.61 = 85,520.58 : x
  2. Step 2: Convert to fraction form
    133,342.98/183,926.61 = 85,520.58/x
  3. Step 3: Cross multiply
    133,342.98x = 183,926.61 × 85,520.58
  4. Step 4: Simplify right side
    133,342.98x = 15,729,510,364.63
  5. Step 5: Solve for x
    x = 15,729,510,364.63/133,342.98
  6. Step 6: Final answer
    x = 117,962.79

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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.