Home / 142,413.80-196,530.54-80,319.36

Finding the Fourth Proportional to 142,413.80, 196,530.54 and 80,319.36

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Solution

The fourth proportional to 142,413.80, 196,530.54 and 80,319.36 is: 110,840.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,413.80 : 196,530.54 = 80,319.36 : x
  2. Step 2: Convert to fraction form
    142,413.80/196,530.54 = 80,319.36/x
  3. Step 3: Cross multiply
    142,413.80x = 196,530.54 × 80,319.36
  4. Step 4: Simplify right side
    142,413.80x = 15,785,207,193.25
  5. Step 5: Solve for x
    x = 15,785,207,193.25/142,413.80
  6. Step 6: Final answer
    x = 110,840.43

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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.