Home / 142,797.49-197,063.07-78,262.45

Finding the Fourth Proportional to 142,797.49, 197,063.07 and 78,262.45

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Solution

The fourth proportional to 142,797.49, 197,063.07 and 78,262.45 is: 108,003.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,797.49 : 197,063.07 = 78,262.45 : x
  2. Step 2: Convert to fraction form
    142,797.49/197,063.07 = 78,262.45/x
  3. Step 3: Cross multiply
    142,797.49x = 197,063.07 × 78,262.45
  4. Step 4: Simplify right side
    142,797.49x = 15,422,638,662.72
  5. Step 5: Solve for x
    x = 15,422,638,662.72/142,797.49
  6. Step 6: Final answer
    x = 108,003.57

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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.