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Finding the Fourth Proportional to 101,897.40, 152,846.10 and 68,719.80

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Solution

The fourth proportional to 101,897.40, 152,846.10 and 68,719.80 is: 103,079.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,897.40 : 152,846.10 = 68,719.80 : x
  2. Step 2: Convert to fraction form
    101,897.40/152,846.10 = 68,719.80/x
  3. Step 3: Cross multiply
    101,897.40x = 152,846.10 × 68,719.80
  4. Step 4: Simplify right side
    101,897.40x = 10,503,553,422.78
  5. Step 5: Solve for x
    x = 10,503,553,422.78/101,897.40
  6. Step 6: Final answer
    x = 103,079.70

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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.