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Finding the Fourth Proportional to 132,647.40, 183,047.40 and 72,216.54

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Solution

The fourth proportional to 132,647.40, 183,047.40 and 72,216.54 is: 99,655.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,647.40 : 183,047.40 = 72,216.54 : x
  2. Step 2: Convert to fraction form
    132,647.40/183,047.40 = 72,216.54/x
  3. Step 3: Cross multiply
    132,647.40x = 183,047.40 × 72,216.54
  4. Step 4: Simplify right side
    132,647.40x = 13,219,049,884.00
  5. Step 5: Solve for x
    x = 13,219,049,884.00/132,647.40
  6. Step 6: Final answer
    x = 99,655.55

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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.