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Finding the Fourth Proportional to 120,364.08, 166,100.40 and 66,647.94

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Solution

The fourth proportional to 120,364.08, 166,100.40 and 66,647.94 is: 91,973.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,364.08 : 166,100.40 = 66,647.94 : x
  2. Step 2: Convert to fraction form
    120,364.08/166,100.40 = 66,647.94/x
  3. Step 3: Cross multiply
    120,364.08x = 166,100.40 × 66,647.94
  4. Step 4: Simplify right side
    120,364.08x = 11,070,249,493.18
  5. Step 5: Solve for x
    x = 11,070,249,493.18/120,364.08
  6. Step 6: Final answer
    x = 91,973.03

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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.