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Finding the Fourth Proportional to 143,150.40, 214,725.60 and 134,985.60

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Solution

The fourth proportional to 143,150.40, 214,725.60 and 134,985.60 is: 202,478.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,150.40 : 214,725.60 = 134,985.60 : x
  2. Step 2: Convert to fraction form
    143,150.40/214,725.60 = 134,985.60/x
  3. Step 3: Cross multiply
    143,150.40x = 214,725.60 × 134,985.60
  4. Step 4: Simplify right side
    143,150.40x = 28,984,863,951.36
  5. Step 5: Solve for x
    x = 28,984,863,951.36/143,150.40
  6. Step 6: Final answer
    x = 202,478.40

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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.