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Finding the Fourth Proportional to 179,090.60, 268,328.70 and 85,394.60

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Solution

The fourth proportional to 179,090.60, 268,328.70 and 85,394.60 is: 127,945.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,090.60 : 268,328.70 = 85,394.60 : x
  2. Step 2: Convert to fraction form
    179,090.60/268,328.70 = 85,394.60/x
  3. Step 3: Cross multiply
    179,090.60x = 268,328.70 × 85,394.60
  4. Step 4: Simplify right side
    179,090.60x = 22,913,822,005.02
  5. Step 5: Solve for x
    x = 22,913,822,005.02/179,090.60
  6. Step 6: Final answer
    x = 127,945.42

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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.