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Finding the Fourth Proportional to 135,004.60, 202,506.90 and 128,443.60

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Solution

The fourth proportional to 135,004.60, 202,506.90 and 128,443.60 is: 192,665.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,004.60 : 202,506.90 = 128,443.60 : x
  2. Step 2: Convert to fraction form
    135,004.60/202,506.90 = 128,443.60/x
  3. Step 3: Cross multiply
    135,004.60x = 202,506.90 × 128,443.60
  4. Step 4: Simplify right side
    135,004.60x = 26,010,715,260.84
  5. Step 5: Solve for x
    x = 26,010,715,260.84/135,004.60
  6. Step 6: Final answer
    x = 192,665.40

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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.