Home / 142,718.64-196,765-122,789.59

Finding the Fourth Proportional to 142,718.64, 196,765 and 122,789.59

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Solution

The fourth proportional to 142,718.64, 196,765 and 122,789.59 is: 169,288.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,718.64 : 196,765 = 122,789.59 : x
  2. Step 2: Convert to fraction form
    142,718.64/196,765 = 122,789.59/x
  3. Step 3: Cross multiply
    142,718.64x = 196,765 × 122,789.59
  4. Step 4: Simplify right side
    142,718.64x = 24,160,693,676.35
  5. Step 5: Solve for x
    x = 24,160,693,676.35/142,718.64
  6. Step 6: Final answer
    x = 169,288.98

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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.