Home / 86,929.60-130,394.40-82,847.20

Finding the Fourth Proportional to 86,929.60, 130,394.40 and 82,847.20

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Solution

The fourth proportional to 86,929.60, 130,394.40 and 82,847.20 is: 124,270.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,929.60 : 130,394.40 = 82,847.20 : x
  2. Step 2: Convert to fraction form
    86,929.60/130,394.40 = 82,847.20/x
  3. Step 3: Cross multiply
    86,929.60x = 130,394.40 × 82,847.20
  4. Step 4: Simplify right side
    86,929.60x = 10,802,810,935.68
  5. Step 5: Solve for x
    x = 10,802,810,935.68/86,929.60
  6. Step 6: Final answer
    x = 124,270.80

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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.