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Finding the Fourth Proportional to 199,674.66, 299,428.80 and 81,265.62

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Solution

The fourth proportional to 199,674.66, 299,428.80 and 81,265.62 is: 121,864.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,674.66 : 299,428.80 = 81,265.62 : x
  2. Step 2: Convert to fraction form
    199,674.66/299,428.80 = 81,265.62/x
  3. Step 3: Cross multiply
    199,674.66x = 299,428.80 × 81,265.62
  4. Step 4: Simplify right side
    199,674.66x = 24,333,267,077.86
  5. Step 5: Solve for x
    x = 24,333,267,077.86/199,674.66
  6. Step 6: Final answer
    x = 121,864.57

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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.