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Finding the Fourth Proportional to 127,208.57, 190,812.87 and 42,968.97

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Solution

The fourth proportional to 127,208.57, 190,812.87 and 42,968.97 is: 64,453.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,208.57 : 190,812.87 = 42,968.97 : x
  2. Step 2: Convert to fraction form
    127,208.57/190,812.87 = 42,968.97/x
  3. Step 3: Cross multiply
    127,208.57x = 190,812.87 × 42,968.97
  4. Step 4: Simplify right side
    127,208.57x = 8,199,032,486.64
  5. Step 5: Solve for x
    x = 8,199,032,486.64/127,208.57
  6. Step 6: Final answer
    x = 64,453.46

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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.