Home / 142,970.19-197,305.30-79,308.03

Finding the Fourth Proportional to 142,970.19, 197,305.30 and 79,308.03

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Solution

The fourth proportional to 142,970.19, 197,305.30 and 79,308.03 is: 109,448.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,970.19 : 197,305.30 = 79,308.03 : x
  2. Step 2: Convert to fraction form
    142,970.19/197,305.30 = 79,308.03/x
  3. Step 3: Cross multiply
    142,970.19x = 197,305.30 × 79,308.03
  4. Step 4: Simplify right side
    142,970.19x = 15,647,894,651.56
  5. Step 5: Solve for x
    x = 15,647,894,651.56/142,970.19
  6. Step 6: Final answer
    x = 109,448.65

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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.