Home / 137,981.34-190,413.81-80,616.33

Finding the Fourth Proportional to 137,981.34, 190,413.81 and 80,616.33

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Solution

The fourth proportional to 137,981.34, 190,413.81 and 80,616.33 is: 111,250.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,981.34 : 190,413.81 = 80,616.33 : x
  2. Step 2: Convert to fraction form
    137,981.34/190,413.81 = 80,616.33/x
  3. Step 3: Cross multiply
    137,981.34x = 190,413.81 × 80,616.33
  4. Step 4: Simplify right side
    137,981.34x = 15,350,462,543.52
  5. Step 5: Solve for x
    x = 15,350,462,543.52/137,981.34
  6. Step 6: Final answer
    x = 111,250.28

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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.