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Finding the Fourth Proportional to 177,508.40, 266,413.80 and 72,402.80

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Solution

The fourth proportional to 177,508.40, 266,413.80 and 72,402.80 is: 108,665.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,508.40 : 266,413.80 = 72,402.80 : x
  2. Step 2: Convert to fraction form
    177,508.40/266,413.80 = 72,402.80/x
  3. Step 3: Cross multiply
    177,508.40x = 266,413.80 × 72,402.80
  4. Step 4: Simplify right side
    177,508.40x = 19,289,105,078.64
  5. Step 5: Solve for x
    x = 19,289,105,078.64/177,508.40
  6. Step 6: Final answer
    x = 108,665.87

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1.5x scale

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.