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Finding the Fourth Proportional to 199,699.56, 299,551.99 and 66,579.86

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Solution

The fourth proportional to 199,699.56, 299,551.99 and 66,579.86 is: 99,870.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,699.56 : 299,551.99 = 66,579.86 : x
  2. Step 2: Convert to fraction form
    199,699.56/299,551.99 = 66,579.86/x
  3. Step 3: Cross multiply
    199,699.56x = 299,551.99 × 66,579.86
  4. Step 4: Simplify right side
    199,699.56x = 19,944,130,389.03
  5. Step 5: Solve for x
    x = 19,944,130,389.03/199,699.56
  6. Step 6: Final answer
    x = 99,870.68

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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.