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Finding the Fourth Proportional to 120,373.26, 166,112.46 and 65,925.45

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Solution

The fourth proportional to 120,373.26, 166,112.46 and 65,925.45 is: 90,975.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,373.26 : 166,112.46 = 65,925.45 : x
  2. Step 2: Convert to fraction form
    120,373.26/166,112.46 = 65,925.45/x
  3. Step 3: Cross multiply
    120,373.26x = 166,112.46 × 65,925.45
  4. Step 4: Simplify right side
    120,373.26x = 10,951,038,676.11
  5. Step 5: Solve for x
    x = 10,951,038,676.11/120,373.26
  6. Step 6: Final answer
    x = 90,975.68

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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.