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Finding the Fourth Proportional to 199,925.31, 299,903.45 and 66,806.03

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Solution

The fourth proportional to 199,925.31, 299,903.45 and 66,806.03 is: 100,214.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,925.31 : 299,903.45 = 66,806.03 : x
  2. Step 2: Convert to fraction form
    199,925.31/299,903.45 = 66,806.03/x
  3. Step 3: Cross multiply
    199,925.31x = 299,903.45 × 66,806.03
  4. Step 4: Simplify right side
    199,925.31x = 20,035,357,044.26
  5. Step 5: Solve for x
    x = 20,035,357,044.26/199,925.31
  6. Step 6: Final answer
    x = 100,214.21

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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.