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Finding the Fourth Proportional to 199,699.95, 299,552.57 and 66,580.25

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Solution

The fourth proportional to 199,699.95, 299,552.57 and 66,580.25 is: 99,871.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,699.95 : 299,552.57 = 66,580.25 : x
  2. Step 2: Convert to fraction form
    199,699.95/299,552.57 = 66,580.25/x
  3. Step 3: Cross multiply
    199,699.95x = 299,552.57 × 66,580.25
  4. Step 4: Simplify right side
    199,699.95x = 19,944,284,790.75
  5. Step 5: Solve for x
    x = 19,944,284,790.75/199,699.95
  6. Step 6: Final answer
    x = 99,871.26

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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.