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Finding the Fourth Proportional to 120,884.30, 166,810.54 and 69,900.34

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Solution

The fourth proportional to 120,884.30, 166,810.54 and 69,900.34 is: 96,456.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,884.30 : 166,810.54 = 69,900.34 : x
  2. Step 2: Convert to fraction form
    120,884.30/166,810.54 = 69,900.34/x
  3. Step 3: Cross multiply
    120,884.30x = 166,810.54 × 69,900.34
  4. Step 4: Simplify right side
    120,884.30x = 11,660,113,461.58
  5. Step 5: Solve for x
    x = 11,660,113,461.58/120,884.30
  6. Step 6: Final answer
    x = 96,456.81

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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.