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Finding the Fourth Proportional to 86,817.60, 130,226.40 and 84,873.60

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Solution

The fourth proportional to 86,817.60, 130,226.40 and 84,873.60 is: 127,310.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,817.60 : 130,226.40 = 84,873.60 : x
  2. Step 2: Convert to fraction form
    86,817.60/130,226.40 = 84,873.60/x
  3. Step 3: Cross multiply
    86,817.60x = 130,226.40 × 84,873.60
  4. Step 4: Simplify right side
    86,817.60x = 11,052,783,383.04
  5. Step 5: Solve for x
    x = 11,052,783,383.04/86,817.60
  6. Step 6: Final answer
    x = 127,310.40

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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.