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Finding the Fourth Proportional to 171,779.04, 257,692.86 and 66,608.64

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Solution

The fourth proportional to 171,779.04, 257,692.86 and 66,608.64 is: 99,922.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,779.04 : 257,692.86 = 66,608.64 : x
  2. Step 2: Convert to fraction form
    171,779.04/257,692.86 = 66,608.64/x
  3. Step 3: Cross multiply
    171,779.04x = 257,692.86 × 66,608.64
  4. Step 4: Simplify right side
    171,779.04x = 17,164,570,942.31
  5. Step 5: Solve for x
    x = 17,164,570,942.31/171,779.04
  6. Step 6: Final answer
    x = 99,922.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.