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Finding the Fourth Proportional to 127,212.70, 190,841.04 and 42,973.48

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Solution

The fourth proportional to 127,212.70, 190,841.04 and 42,973.48 is: 64,467.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,212.70 : 190,841.04 = 42,973.48 : x
  2. Step 2: Convert to fraction form
    127,212.70/190,841.04 = 42,973.48/x
  3. Step 3: Cross multiply
    127,212.70x = 190,841.04 × 42,973.48
  4. Step 4: Simplify right side
    127,212.70x = 8,201,102,661.41
  5. Step 5: Solve for x
    x = 8,201,102,661.41/127,212.70
  6. Step 6: Final answer
    x = 64,467.64

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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.