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Finding the Fourth Proportional to 199,921.34, 299,897.50 and 66,802.07

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Solution

The fourth proportional to 199,921.34, 299,897.50 and 66,802.07 is: 100,208.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,921.34 : 299,897.50 = 66,802.07 : x
  2. Step 2: Convert to fraction form
    199,921.34/299,897.50 = 66,802.07/x
  3. Step 3: Cross multiply
    199,921.34x = 299,897.50 × 66,802.07
  4. Step 4: Simplify right side
    199,921.34x = 20,033,772,121.33
  5. Step 5: Solve for x
    x = 20,033,772,121.33/199,921.34
  6. Step 6: Final answer
    x = 100,208.27

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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.