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Finding the Fourth Proportional to 101,904.90, 153,003.15 and 72,453.30

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Solution

The fourth proportional to 101,904.90, 153,003.15 and 72,453.30 is: 108,783.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,904.90 : 153,003.15 = 72,453.30 : x
  2. Step 2: Convert to fraction form
    101,904.90/153,003.15 = 72,453.30/x
  3. Step 3: Cross multiply
    101,904.90x = 153,003.15 × 72,453.30
  4. Step 4: Simplify right side
    101,904.90x = 11,085,583,127.90
  5. Step 5: Solve for x
    x = 11,085,583,127.90/101,904.90
  6. Step 6: Final answer
    x = 108,783.61

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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.