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Finding the Fourth Proportional to 103,468.59, 143,197.07 and 100,983.92

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Solution

The fourth proportional to 103,468.59, 143,197.07 and 100,983.92 is: 139,758.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,468.59 : 143,197.07 = 100,983.92 : x
  2. Step 2: Convert to fraction form
    103,468.59/143,197.07 = 100,983.92/x
  3. Step 3: Cross multiply
    103,468.59x = 143,197.07 × 100,983.92
  4. Step 4: Simplify right side
    103,468.59x = 14,460,600,240.21
  5. Step 5: Solve for x
    x = 14,460,600,240.21/103,468.59
  6. Step 6: Final answer
    x = 139,758.36

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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.