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Finding the Fourth Proportional to 144,546.60, 216,647.10 and 74,389.80

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Solution

The fourth proportional to 144,546.60, 216,647.10 and 74,389.80 is: 111,495.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,546.60 : 216,647.10 = 74,389.80 : x
  2. Step 2: Convert to fraction form
    144,546.60/216,647.10 = 74,389.80/x
  3. Step 3: Cross multiply
    144,546.60x = 216,647.10 × 74,389.80
  4. Step 4: Simplify right side
    144,546.60x = 16,116,334,439.58
  5. Step 5: Solve for x
    x = 16,116,334,439.58/144,546.60
  6. Step 6: Final answer
    x = 111,495.77

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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.