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Finding the Fourth Proportional to 101,783.16, 152,600.94 and 68,420.48

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Solution

The fourth proportional to 101,783.16, 152,600.94 and 68,420.48 is: 102,581.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,783.16 : 152,600.94 = 68,420.48 : x
  2. Step 2: Convert to fraction form
    101,783.16/152,600.94 = 68,420.48/x
  3. Step 3: Cross multiply
    101,783.16x = 152,600.94 × 68,420.48
  4. Step 4: Simplify right side
    101,783.16x = 10,441,029,563.25
  5. Step 5: Solve for x
    x = 10,441,029,563.25/101,783.16
  6. Step 6: Final answer
    x = 102,581.11

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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.