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Finding the Fourth Proportional to 101,911.40, 152,867.10 and 68,733.80

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Solution

The fourth proportional to 101,911.40, 152,867.10 and 68,733.80 is: 103,100.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,911.40 : 152,867.10 = 68,733.80 : x
  2. Step 2: Convert to fraction form
    101,911.40/152,867.10 = 68,733.80/x
  3. Step 3: Cross multiply
    101,911.40x = 152,867.10 × 68,733.80
  4. Step 4: Simplify right side
    101,911.40x = 10,507,136,677.98
  5. Step 5: Solve for x
    x = 10,507,136,677.98/101,911.40
  6. Step 6: Final answer
    x = 103,100.70

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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.