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Finding the Fourth Proportional to 103,963.48, 143,469.30 and 56,216.68

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Solution

The fourth proportional to 103,963.48, 143,469.30 and 56,216.68 is: 77,578.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,963.48 : 143,469.30 = 56,216.68 : x
  2. Step 2: Convert to fraction form
    103,963.48/143,469.30 = 56,216.68/x
  3. Step 3: Cross multiply
    103,963.48x = 143,469.30 × 56,216.68
  4. Step 4: Simplify right side
    103,963.48x = 8,065,367,727.92
  5. Step 5: Solve for x
    x = 8,065,367,727.92/103,963.48
  6. Step 6: Final answer
    x = 77,578.85

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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.