Home / 100,316.18-138,413.59-68,055.20

Finding the Fourth Proportional to 100,316.18, 138,413.59 and 68,055.20

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Solution

The fourth proportional to 100,316.18, 138,413.59 and 68,055.20 is: 93,900.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,316.18 : 138,413.59 = 68,055.20 : x
  2. Step 2: Convert to fraction form
    100,316.18/138,413.59 = 68,055.20/x
  3. Step 3: Cross multiply
    100,316.18x = 138,413.59 × 68,055.20
  4. Step 4: Simplify right side
    100,316.18x = 9,419,764,207.01
  5. Step 5: Solve for x
    x = 9,419,764,207.01/100,316.18
  6. Step 6: Final answer
    x = 93,900.74

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1.5x scale

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.