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Finding the Fourth Proportional to 171,165.06, 256,808.40 and 76,386.60

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Solution

The fourth proportional to 171,165.06, 256,808.40 and 76,386.60 is: 114,607.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,165.06 : 256,808.40 = 76,386.60 : x
  2. Step 2: Convert to fraction form
    171,165.06/256,808.40 = 76,386.60/x
  3. Step 3: Cross multiply
    171,165.06x = 256,808.40 × 76,386.60
  4. Step 4: Simplify right side
    171,165.06x = 19,616,720,527.44
  5. Step 5: Solve for x
    x = 19,616,720,527.44/171,165.06
  6. Step 6: Final answer
    x = 114,607.04

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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.