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Finding the Fourth Proportional to 132,697.40, 183,137.54 and 78,982.60

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Solution

The fourth proportional to 132,697.40, 183,137.54 and 78,982.60 is: 109,004.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,697.40 : 183,137.54 = 78,982.60 : x
  2. Step 2: Convert to fraction form
    132,697.40/183,137.54 = 78,982.60/x
  3. Step 3: Cross multiply
    132,697.40x = 183,137.54 × 78,982.60
  4. Step 4: Simplify right side
    132,697.40x = 14,464,679,066.80
  5. Step 5: Solve for x
    x = 14,464,679,066.80/132,697.40
  6. Step 6: Final answer
    x = 109,004.99

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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.