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Finding the Fourth Proportional to 123,111.63, 169,883.84 and 69,409.85

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Solution

The fourth proportional to 123,111.63, 169,883.84 and 69,409.85 is: 95,779.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,111.63 : 169,883.84 = 69,409.85 : x
  2. Step 2: Convert to fraction form
    123,111.63/169,883.84 = 69,409.85/x
  3. Step 3: Cross multiply
    123,111.63x = 169,883.84 × 69,409.85
  4. Step 4: Simplify right side
    123,111.63x = 11,791,611,175.93
  5. Step 5: Solve for x
    x = 11,791,611,175.93/123,111.63
  6. Step 6: Final answer
    x = 95,779.83

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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.