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Finding the Fourth Proportional to 101,553.40, 152,330.10 and 72,004.60

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Solution

The fourth proportional to 101,553.40, 152,330.10 and 72,004.60 is: 108,006.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,553.40 : 152,330.10 = 72,004.60 : x
  2. Step 2: Convert to fraction form
    101,553.40/152,330.10 = 72,004.60/x
  3. Step 3: Cross multiply
    101,553.40x = 152,330.10 × 72,004.60
  4. Step 4: Simplify right side
    101,553.40x = 10,968,467,918.46
  5. Step 5: Solve for x
    x = 10,968,467,918.46/101,553.40
  6. Step 6: Final answer
    x = 108,006.90

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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.