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Finding the Fourth Proportional to 133,028.72, 183,583.52 and 72,603.24

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Solution

The fourth proportional to 133,028.72, 183,583.52 and 72,603.24 is: 100,194.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,028.72 : 183,583.52 = 72,603.24 : x
  2. Step 2: Convert to fraction form
    133,028.72/183,583.52 = 72,603.24/x
  3. Step 3: Cross multiply
    133,028.72x = 183,583.52 × 72,603.24
  4. Step 4: Simplify right side
    133,028.72x = 13,328,758,362.60
  5. Step 5: Solve for x
    x = 13,328,758,362.60/133,028.72
  6. Step 6: Final answer
    x = 100,194.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.