Home / 104,408.85-156,503.40-66,486.95

Finding the Fourth Proportional to 104,408.85, 156,503.40 and 66,486.95

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Solution

The fourth proportional to 104,408.85, 156,503.40 and 66,486.95 is: 99,660.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,408.85 : 156,503.40 = 66,486.95 : x
  2. Step 2: Convert to fraction form
    104,408.85/156,503.40 = 66,486.95/x
  3. Step 3: Cross multiply
    104,408.85x = 156,503.40 × 66,486.95
  4. Step 4: Simplify right side
    104,408.85x = 10,405,433,730.63
  5. Step 5: Solve for x
    x = 10,405,433,730.63/104,408.85
  6. Step 6: Final answer
    x = 99,660.46

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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.