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Finding the Fourth Proportional to 113,710.50, 156,920.49 and 63,408.42

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Solution

The fourth proportional to 113,710.50, 156,920.49 and 63,408.42 is: 87,503.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,710.50 : 156,920.49 = 63,408.42 : x
  2. Step 2: Convert to fraction form
    113,710.50/156,920.49 = 63,408.42/x
  3. Step 3: Cross multiply
    113,710.50x = 156,920.49 × 63,408.42
  4. Step 4: Simplify right side
    113,710.50x = 9,950,080,336.53
  5. Step 5: Solve for x
    x = 9,950,080,336.53/113,710.50
  6. Step 6: Final answer
    x = 87,503.62

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1.5x scale

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.