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Finding the Fourth Proportional to 178,166.40, 266,731.20 and 108,009.60

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Solution

The fourth proportional to 178,166.40, 266,731.20 and 108,009.60 is: 161,700.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,166.40 : 266,731.20 = 108,009.60 : x
  2. Step 2: Convert to fraction form
    178,166.40/266,731.20 = 108,009.60/x
  3. Step 3: Cross multiply
    178,166.40x = 266,731.20 × 108,009.60
  4. Step 4: Simplify right side
    178,166.40x = 28,809,530,219.52
  5. Step 5: Solve for x
    x = 28,809,530,219.52/178,166.40
  6. Step 6: Final answer
    x = 161,700.13

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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.