Home / 130,979.46-196,173.80-91,711.88

Finding the Fourth Proportional to 130,979.46, 196,173.80 and 91,711.88

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Solution

The fourth proportional to 130,979.46, 196,173.80 and 91,711.88 is: 137,360.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,979.46 : 196,173.80 = 91,711.88 : x
  2. Step 2: Convert to fraction form
    130,979.46/196,173.80 = 91,711.88/x
  3. Step 3: Cross multiply
    130,979.46x = 196,173.80 × 91,711.88
  4. Step 4: Simplify right side
    130,979.46x = 17,991,467,644.89
  5. Step 5: Solve for x
    x = 17,991,467,644.89/130,979.46
  6. Step 6: Final answer
    x = 137,360.98

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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.