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Finding the Fourth Proportional to 117,331.87, 175,710.75 and 105,959.47

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Solution

The fourth proportional to 117,331.87, 175,710.75 and 105,959.47 is: 158,679.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,331.87 : 175,710.75 = 105,959.47 : x
  2. Step 2: Convert to fraction form
    117,331.87/175,710.75 = 105,959.47/x
  3. Step 3: Cross multiply
    117,331.87x = 175,710.75 × 105,959.47
  4. Step 4: Simplify right side
    117,331.87x = 18,618,217,413.51
  5. Step 5: Solve for x
    x = 18,618,217,413.51/117,331.87
  6. Step 6: Final answer
    x = 158,679.98

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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.