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Finding the Fourth Proportional to 133,083.52, 183,686.88 and 85,449.76

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Solution

The fourth proportional to 133,083.52, 183,686.88 and 85,449.76 is: 117,940.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,083.52 : 183,686.88 = 85,449.76 : x
  2. Step 2: Convert to fraction form
    133,083.52/183,686.88 = 85,449.76/x
  3. Step 3: Cross multiply
    133,083.52x = 183,686.88 × 85,449.76
  4. Step 4: Simplify right side
    133,083.52x = 15,695,999,811.15
  5. Step 5: Solve for x
    x = 15,695,999,811.15/133,083.52
  6. Step 6: Final answer
    x = 117,940.97

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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.