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Finding the Fourth Proportional to 199,925.20, 299,903.30 and 66,805.93

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Solution

The fourth proportional to 199,925.20, 299,903.30 and 66,805.93 is: 100,214.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,925.20 : 299,903.30 = 66,805.93 : x
  2. Step 2: Convert to fraction form
    199,925.20/299,903.30 = 66,805.93/x
  3. Step 3: Cross multiply
    199,925.20x = 299,903.30 × 66,805.93
  4. Step 4: Simplify right side
    199,925.20x = 20,035,318,866.57
  5. Step 5: Solve for x
    x = 20,035,318,866.57/199,925.20
  6. Step 6: Final answer
    x = 100,214.07

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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.