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Finding the Fourth Proportional to 178,010.20, 266,928.90 and 99,040.60

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Solution

The fourth proportional to 178,010.20, 266,928.90 and 99,040.60 is: 148,512.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,010.20 : 266,928.90 = 99,040.60 : x
  2. Step 2: Convert to fraction form
    178,010.20/266,928.90 = 99,040.60/x
  3. Step 3: Cross multiply
    178,010.20x = 266,928.90 × 99,040.60
  4. Step 4: Simplify right side
    178,010.20x = 26,436,798,413.34
  5. Step 5: Solve for x
    x = 26,436,798,413.34/178,010.20
  6. Step 6: Final answer
    x = 148,512.83

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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.