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Finding the Fourth Proportional to 163,813.95, 245,721.06 and 45,485.28

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Solution

The fourth proportional to 163,813.95, 245,721.06 and 45,485.28 is: 68,227.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,813.95 : 245,721.06 = 45,485.28 : x
  2. Step 2: Convert to fraction form
    163,813.95/245,721.06 = 45,485.28/x
  3. Step 3: Cross multiply
    163,813.95x = 245,721.06 × 45,485.28
  4. Step 4: Simplify right side
    163,813.95x = 11,176,691,216.00
  5. Step 5: Solve for x
    x = 11,176,691,216.00/163,813.95
  6. Step 6: Final answer
    x = 68,227.96

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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.