Home / 142,371.40-196,455.44-78,700.54

Finding the Fourth Proportional to 142,371.40, 196,455.44 and 78,700.54

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Solution

The fourth proportional to 142,371.40, 196,455.44 and 78,700.54 is: 108,597.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,371.40 : 196,455.44 = 78,700.54 : x
  2. Step 2: Convert to fraction form
    142,371.40/196,455.44 = 78,700.54/x
  3. Step 3: Cross multiply
    142,371.40x = 196,455.44 × 78,700.54
  4. Step 4: Simplify right side
    142,371.40x = 15,461,149,213.94
  5. Step 5: Solve for x
    x = 15,461,149,213.94/142,371.40
  6. Step 6: Final answer
    x = 108,597.30

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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.