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Finding the Fourth Proportional to 144,441.60, 216,662.40 and 100,118.40

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Solution

The fourth proportional to 144,441.60, 216,662.40 and 100,118.40 is: 150,177.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,441.60 : 216,662.40 = 100,118.40 : x
  2. Step 2: Convert to fraction form
    144,441.60/216,662.40 = 100,118.40/x
  3. Step 3: Cross multiply
    144,441.60x = 216,662.40 × 100,118.40
  4. Step 4: Simplify right side
    144,441.60x = 21,691,892,828.16
  5. Step 5: Solve for x
    x = 21,691,892,828.16/144,441.60
  6. Step 6: Final answer
    x = 150,177.60

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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.