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Finding the Fourth Proportional to 142,042.62, 213,056.56 and 42,203.64

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Solution

The fourth proportional to 142,042.62, 213,056.56 and 42,203.64 is: 63,303.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,042.62 : 213,056.56 = 42,203.64 : x
  2. Step 2: Convert to fraction form
    142,042.62/213,056.56 = 42,203.64/x
  3. Step 3: Cross multiply
    142,042.62x = 213,056.56 × 42,203.64
  4. Step 4: Simplify right side
    142,042.62x = 8,991,762,357.88
  5. Step 5: Solve for x
    x = 8,991,762,357.88/142,042.62
  6. Step 6: Final answer
    x = 63,303.27

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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.