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Finding the Fourth Proportional to 134,758.60, 201,919.20 and 84,749.20

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Solution

The fourth proportional to 134,758.60, 201,919.20 and 84,749.20 is: 126,986.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,758.60 : 201,919.20 = 84,749.20 : x
  2. Step 2: Convert to fraction form
    134,758.60/201,919.20 = 84,749.20/x
  3. Step 3: Cross multiply
    134,758.60x = 201,919.20 × 84,749.20
  4. Step 4: Simplify right side
    134,758.60x = 17,112,490,664.64
  5. Step 5: Solve for x
    x = 17,112,490,664.64/134,758.60
  6. Step 6: Final answer
    x = 126,986.26

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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.