Home / 142,947.36-197,267.49-79,285.16

Finding the Fourth Proportional to 142,947.36, 197,267.49 and 79,285.16

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Solution

The fourth proportional to 142,947.36, 197,267.49 and 79,285.16 is: 109,413.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,947.36 : 197,267.49 = 79,285.16 : x
  2. Step 2: Convert to fraction form
    142,947.36/197,267.49 = 79,285.16/x
  3. Step 3: Cross multiply
    142,947.36x = 197,267.49 × 79,285.16
  4. Step 4: Simplify right side
    142,947.36x = 15,640,383,597.98
  5. Step 5: Solve for x
    x = 15,640,383,597.98/142,947.36
  6. Step 6: Final answer
    x = 109,413.59

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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.