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Finding the Fourth Proportional to 101,163.45, 151,763.40 and 42,005.10

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Solution

The fourth proportional to 101,163.45, 151,763.40 and 42,005.10 is: 63,015.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,163.45 : 151,763.40 = 42,005.10 : x
  2. Step 2: Convert to fraction form
    101,163.45/151,763.40 = 42,005.10/x
  3. Step 3: Cross multiply
    101,163.45x = 151,763.40 × 42,005.10
  4. Step 4: Simplify right side
    101,163.45x = 6,374,836,793.34
  5. Step 5: Solve for x
    x = 6,374,836,793.34/101,163.45
  6. Step 6: Final answer
    x = 63,015.22

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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.