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Finding the Fourth Proportional to 251,413.14, 377,020.89 and 91,451.10

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Solution

The fourth proportional to 251,413.14, 377,020.89 and 91,451.10 is: 137,140.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,413.14 : 377,020.89 = 91,451.10 : x
  2. Step 2: Convert to fraction form
    251,413.14/377,020.89 = 91,451.10/x
  3. Step 3: Cross multiply
    251,413.14x = 377,020.89 × 91,451.10
  4. Step 4: Simplify right side
    251,413.14x = 34,478,975,113.48
  5. Step 5: Solve for x
    x = 34,478,975,113.48/251,413.14
  6. Step 6: Final answer
    x = 137,140.70

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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.