Home / 109,817.24-164,860.52-72,408.60

Finding the Fourth Proportional to 109,817.24, 164,860.52 and 72,408.60

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Solution

The fourth proportional to 109,817.24, 164,860.52 and 72,408.60 is: 108,701.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,817.24 : 164,860.52 = 72,408.60 : x
  2. Step 2: Convert to fraction form
    109,817.24/164,860.52 = 72,408.60/x
  3. Step 3: Cross multiply
    109,817.24x = 164,860.52 × 72,408.60
  4. Step 4: Simplify right side
    109,817.24x = 11,937,319,086.43
  5. Step 5: Solve for x
    x = 11,937,319,086.43/109,817.24
  6. Step 6: Final answer
    x = 108,701.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.