Home / 103,408.40-142,714.04-63,145.73

Finding the Fourth Proportional to 103,408.40, 142,714.04 and 63,145.73

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Solution

The fourth proportional to 103,408.40, 142,714.04 and 63,145.73 is: 87,147.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,408.40 : 142,714.04 = 63,145.73 : x
  2. Step 2: Convert to fraction form
    103,408.40/142,714.04 = 63,145.73/x
  3. Step 3: Cross multiply
    103,408.40x = 142,714.04 × 63,145.73
  4. Step 4: Simplify right side
    103,408.40x = 9,011,781,207.75
  5. Step 5: Solve for x
    x = 9,011,781,207.75/103,408.40
  6. Step 6: Final answer
    x = 87,147.48

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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.