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Finding the Fourth Proportional to 120,930.22, 166,870.42 and 69,935.32

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Solution

The fourth proportional to 120,930.22, 166,870.42 and 69,935.32 is: 96,503.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,930.22 : 166,870.42 = 69,935.32 : x
  2. Step 2: Convert to fraction form
    120,930.22/166,870.42 = 69,935.32/x
  3. Step 3: Cross multiply
    120,930.22x = 166,870.42 × 69,935.32
  4. Step 4: Simplify right side
    120,930.22x = 11,670,136,221.23
  5. Step 5: Solve for x
    x = 11,670,136,221.23/120,930.22
  6. Step 6: Final answer
    x = 96,503.06

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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.