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Finding the Fourth Proportional to 169,485.12, 254,171.88 and 57,135

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Solution

The fourth proportional to 169,485.12, 254,171.88 and 57,135 is: 85,683.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,485.12 : 254,171.88 = 57,135 : x
  2. Step 2: Convert to fraction form
    169,485.12/254,171.88 = 57,135/x
  3. Step 3: Cross multiply
    169,485.12x = 254,171.88 × 57,135
  4. Step 4: Simplify right side
    169,485.12x = 14,522,110,363.80
  5. Step 5: Solve for x
    x = 14,522,110,363.80/169,485.12
  6. Step 6: Final answer
    x = 85,683.69

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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.