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Finding the Fourth Proportional to 144,431.60, 216,474.60 and 74,274.80

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Solution

The fourth proportional to 144,431.60, 216,474.60 and 74,274.80 is: 111,323.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,431.60 : 216,474.60 = 74,274.80 : x
  2. Step 2: Convert to fraction form
    144,431.60/216,474.60 = 74,274.80/x
  3. Step 3: Cross multiply
    144,431.60x = 216,474.60 × 74,274.80
  4. Step 4: Simplify right side
    144,431.60x = 16,078,607,620.08
  5. Step 5: Solve for x
    x = 16,078,607,620.08/144,431.60
  6. Step 6: Final answer
    x = 111,323.34

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1.5x scale

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.