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Finding the Fourth Proportional to 142,469.58, 196,525.92 and 90,690.93

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Solution

The fourth proportional to 142,469.58, 196,525.92 and 90,690.93 is: 125,101.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,469.58 : 196,525.92 = 90,690.93 : x
  2. Step 2: Convert to fraction form
    142,469.58/196,525.92 = 90,690.93/x
  3. Step 3: Cross multiply
    142,469.58x = 196,525.92 × 90,690.93
  4. Step 4: Simplify right side
    142,469.58x = 17,823,118,453.91
  5. Step 5: Solve for x
    x = 17,823,118,453.91/142,469.58
  6. Step 6: Final answer
    x = 125,101.22

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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.