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Finding the Fourth Proportional to 132,687.56, 183,094.34 and 78,965.12

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Solution

The fourth proportional to 132,687.56, 183,094.34 and 78,965.12 is: 108,963.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,687.56 : 183,094.34 = 78,965.12 : x
  2. Step 2: Convert to fraction form
    132,687.56/183,094.34 = 78,965.12/x
  3. Step 3: Cross multiply
    132,687.56x = 183,094.34 × 78,965.12
  4. Step 4: Simplify right side
    132,687.56x = 14,458,066,529.42
  5. Step 5: Solve for x
    x = 14,458,066,529.42/132,687.56
  6. Step 6: Final answer
    x = 108,963.24

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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.