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Finding the Fourth Proportional to 120,969.36, 166,918.86 and 67,254.21

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Solution

The fourth proportional to 120,969.36, 166,918.86 and 67,254.21 is: 92,800.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,969.36 : 166,918.86 = 67,254.21 : x
  2. Step 2: Convert to fraction form
    120,969.36/166,918.86 = 67,254.21/x
  3. Step 3: Cross multiply
    120,969.36x = 166,918.86 × 67,254.21
  4. Step 4: Simplify right side
    120,969.36x = 11,225,996,063.40
  5. Step 5: Solve for x
    x = 11,225,996,063.40/120,969.36
  6. Step 6: Final answer
    x = 92,800.33

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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.