Home / 100,735.11-139,011.51-55,413.08

Finding the Fourth Proportional to 100,735.11, 139,011.51 and 55,413.08

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Solution

The fourth proportional to 100,735.11, 139,011.51 and 55,413.08 is: 76,468.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,735.11 : 139,011.51 = 55,413.08 : x
  2. Step 2: Convert to fraction form
    100,735.11/139,011.51 = 55,413.08/x
  3. Step 3: Cross multiply
    100,735.11x = 139,011.51 × 55,413.08
  4. Step 4: Simplify right side
    100,735.11x = 7,703,055,924.55
  5. Step 5: Solve for x
    x = 7,703,055,924.55/100,735.11
  6. Step 6: Final answer
    x = 76,468.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.