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Finding the Fourth Proportional to 144,321.44, 216,404.81 and 72,263.03

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Solution

The fourth proportional to 144,321.44, 216,404.81 and 72,263.03 is: 108,355.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,321.44 : 216,404.81 = 72,263.03 : x
  2. Step 2: Convert to fraction form
    144,321.44/216,404.81 = 72,263.03/x
  3. Step 3: Cross multiply
    144,321.44x = 216,404.81 × 72,263.03
  4. Step 4: Simplify right side
    144,321.44x = 15,638,066,915.86
  5. Step 5: Solve for x
    x = 15,638,066,915.86/144,321.44
  6. Step 6: Final answer
    x = 108,355.81

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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.