Home / 138,413.12-190,811.04-98,600

Finding the Fourth Proportional to 138,413.12, 190,811.04 and 98,600

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Solution

The fourth proportional to 138,413.12, 190,811.04 and 98,600 is: 135,926.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,413.12 : 190,811.04 = 98,600 : x
  2. Step 2: Convert to fraction form
    138,413.12/190,811.04 = 98,600/x
  3. Step 3: Cross multiply
    138,413.12x = 190,811.04 × 98,600
  4. Step 4: Simplify right side
    138,413.12x = 18,813,968,544
  5. Step 5: Solve for x
    x = 18,813,968,544/138,413.12
  6. Step 6: Final answer
    x = 135,926.19

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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.