Home / 123,487.92-170,413.62-66,899.30

Finding the Fourth Proportional to 123,487.92, 170,413.62 and 66,899.30

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Solution

The fourth proportional to 123,487.92, 170,413.62 and 66,899.30 is: 92,321.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,487.92 : 170,413.62 = 66,899.30 : x
  2. Step 2: Convert to fraction form
    123,487.92/170,413.62 = 66,899.30/x
  3. Step 3: Cross multiply
    123,487.92x = 170,413.62 × 66,899.30
  4. Step 4: Simplify right side
    123,487.92x = 11,400,551,036.40
  5. Step 5: Solve for x
    x = 11,400,551,036.40/123,487.92
  6. Step 6: Final answer
    x = 92,321.18

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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.