Home / 142,052.24-196,030.38-78,388.64

Finding the Fourth Proportional to 142,052.24, 196,030.38 and 78,388.64

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Solution

The fourth proportional to 142,052.24, 196,030.38 and 78,388.64 is: 108,175.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,052.24 : 196,030.38 = 78,388.64 : x
  2. Step 2: Convert to fraction form
    142,052.24/196,030.38 = 78,388.64/x
  3. Step 3: Cross multiply
    142,052.24x = 196,030.38 × 78,388.64
  4. Step 4: Simplify right side
    142,052.24x = 15,366,554,886.88
  5. Step 5: Solve for x
    x = 15,366,554,886.88/142,052.24
  6. Step 6: Final answer
    x = 108,175.38

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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.