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Finding the Fourth Proportional to 133,145.64, 183,733.47 and 72,704.25

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Solution

The fourth proportional to 133,145.64, 183,733.47 and 72,704.25 is: 100,327.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,145.64 : 183,733.47 = 72,704.25 : x
  2. Step 2: Convert to fraction form
    133,145.64/183,733.47 = 72,704.25/x
  3. Step 3: Cross multiply
    133,145.64x = 183,733.47 × 72,704.25
  4. Step 4: Simplify right side
    133,145.64x = 13,358,204,136.25
  5. Step 5: Solve for x
    x = 13,358,204,136.25/133,145.64
  6. Step 6: Final answer
    x = 100,327.76

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1.5x scale

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.