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Finding the Fourth Proportional to 174,505.28, 261,699.06 and 66,409

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Solution

The fourth proportional to 174,505.28, 261,699.06 and 66,409 is: 99,591.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    174,505.28 : 261,699.06 = 66,409 : x
  2. Step 2: Convert to fraction form
    174,505.28/261,699.06 = 66,409/x
  3. Step 3: Cross multiply
    174,505.28x = 261,699.06 × 66,409
  4. Step 4: Simplify right side
    174,505.28x = 17,379,172,875.54
  5. Step 5: Solve for x
    x = 17,379,172,875.54/174,505.28
  6. Step 6: Final answer
    x = 99,591.10

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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.