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Finding the Fourth Proportional to 130,758.46, 196,137.69 and 91,392.46

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Solution

The fourth proportional to 130,758.46, 196,137.69 and 91,392.46 is: 137,088.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,758.46 : 196,137.69 = 91,392.46 : x
  2. Step 2: Convert to fraction form
    130,758.46/196,137.69 = 91,392.46/x
  3. Step 3: Cross multiply
    130,758.46x = 196,137.69 × 91,392.46
  4. Step 4: Simplify right side
    130,758.46x = 17,925,505,987.82
  5. Step 5: Solve for x
    x = 17,925,505,987.82/130,758.46
  6. Step 6: Final answer
    x = 137,088.69

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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.