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Finding the Fourth Proportional to 100,975.72, 151,296.12 and 61,413.16

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Solution

The fourth proportional to 100,975.72, 151,296.12 and 61,413.16 is: 92,017.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,975.72 : 151,296.12 = 61,413.16 : x
  2. Step 2: Convert to fraction form
    100,975.72/151,296.12 = 61,413.16/x
  3. Step 3: Cross multiply
    100,975.72x = 151,296.12 × 61,413.16
  4. Step 4: Simplify right side
    100,975.72x = 9,291,572,824.94
  5. Step 5: Solve for x
    x = 9,291,572,824.94/100,975.72
  6. Step 6: Final answer
    x = 92,017.89

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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.