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Finding the Fourth Proportional to 130,081.88, 194,967.50 and 66,932.25

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Solution

The fourth proportional to 130,081.88, 194,967.50 and 66,932.25 is: 100,318.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,081.88 : 194,967.50 = 66,932.25 : x
  2. Step 2: Convert to fraction form
    130,081.88/194,967.50 = 66,932.25/x
  3. Step 3: Cross multiply
    130,081.88x = 194,967.50 × 66,932.25
  4. Step 4: Simplify right side
    130,081.88x = 13,049,613,117.21
  5. Step 5: Solve for x
    x = 13,049,613,117.21/130,081.88
  6. Step 6: Final answer
    x = 100,318.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.