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Finding the Fourth Proportional to 171,130.41, 256,696.06 and 69,928.47

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Solution

The fourth proportional to 171,130.41, 256,696.06 and 69,928.47 is: 104,892.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,130.41 : 256,696.06 = 69,928.47 : x
  2. Step 2: Convert to fraction form
    171,130.41/256,696.06 = 69,928.47/x
  3. Step 3: Cross multiply
    171,130.41x = 256,696.06 × 69,928.47
  4. Step 4: Simplify right side
    171,130.41x = 17,950,362,730.83
  5. Step 5: Solve for x
    x = 17,950,362,730.83/171,130.41
  6. Step 6: Final answer
    x = 104,892.89

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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.