Home / 86,704.30-130,056.45-82,111.60

Finding the Fourth Proportional to 86,704.30, 130,056.45 and 82,111.60

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Solution

The fourth proportional to 86,704.30, 130,056.45 and 82,111.60 is: 123,167.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,704.30 : 130,056.45 = 82,111.60 : x
  2. Step 2: Convert to fraction form
    86,704.30/130,056.45 = 82,111.60/x
  3. Step 3: Cross multiply
    86,704.30x = 130,056.45 × 82,111.60
  4. Step 4: Simplify right side
    86,704.30x = 10,679,143,199.82
  5. Step 5: Solve for x
    x = 10,679,143,199.82/86,704.30
  6. Step 6: Final answer
    x = 123,167.40

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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.