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Finding the Fourth Proportional to 133,085.88, 183,618.72 and 85,255.92

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Solution

The fourth proportional to 133,085.88, 183,618.72 and 85,255.92 is: 117,627.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,085.88 : 183,618.72 = 85,255.92 : x
  2. Step 2: Convert to fraction form
    133,085.88/183,618.72 = 85,255.92/x
  3. Step 3: Cross multiply
    133,085.88x = 183,618.72 × 85,255.92
  4. Step 4: Simplify right side
    133,085.88x = 15,654,582,902.82
  5. Step 5: Solve for x
    x = 15,654,582,902.82/133,085.88
  6. Step 6: Final answer
    x = 117,627.68

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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.