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Finding the Fourth Proportional to 142,464.40, 213,696.60 and 135,903.40

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Solution

The fourth proportional to 142,464.40, 213,696.60 and 135,903.40 is: 203,855.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,464.40 : 213,696.60 = 135,903.40 : x
  2. Step 2: Convert to fraction form
    142,464.40/213,696.60 = 135,903.40/x
  3. Step 3: Cross multiply
    142,464.40x = 213,696.60 × 135,903.40
  4. Step 4: Simplify right side
    142,464.40x = 29,042,094,508.44
  5. Step 5: Solve for x
    x = 29,042,094,508.44/142,464.40
  6. Step 6: Final answer
    x = 203,855.10

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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.