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Finding the Fourth Proportional to 133,145.76, 183,741.48 and 72,716.88

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Solution

The fourth proportional to 133,145.76, 183,741.48 and 72,716.88 is: 100,349.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,145.76 : 183,741.48 = 72,716.88 : x
  2. Step 2: Convert to fraction form
    133,145.76/183,741.48 = 72,716.88/x
  3. Step 3: Cross multiply
    133,145.76x = 183,741.48 × 72,716.88
  4. Step 4: Simplify right side
    133,145.76x = 13,361,107,152.18
  5. Step 5: Solve for x
    x = 13,361,107,152.18/133,145.76
  6. Step 6: Final answer
    x = 100,349.48

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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.