Home / 142,079.54-196,055.81-78,413.24

Finding the Fourth Proportional to 142,079.54, 196,055.81 and 78,413.24

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Solution

The fourth proportional to 142,079.54, 196,055.81 and 78,413.24 is: 108,202.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,079.54 : 196,055.81 = 78,413.24 : x
  2. Step 2: Convert to fraction form
    142,079.54/196,055.81 = 78,413.24/x
  3. Step 3: Cross multiply
    142,079.54x = 196,055.81 × 78,413.24
  4. Step 4: Simplify right side
    142,079.54x = 15,373,369,910.58
  5. Step 5: Solve for x
    x = 15,373,369,910.58/142,079.54
  6. Step 6: Final answer
    x = 108,202.56

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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.