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Finding the Fourth Proportional to 163,355.93, 245,062.44 and 74,618.40

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Solution

The fourth proportional to 163,355.93, 245,062.44 and 74,618.40 is: 111,940.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,355.93 : 245,062.44 = 74,618.40 : x
  2. Step 2: Convert to fraction form
    163,355.93/245,062.44 = 74,618.40/x
  3. Step 3: Cross multiply
    163,355.93x = 245,062.44 × 74,618.40
  4. Step 4: Simplify right side
    163,355.93x = 18,286,167,172.90
  5. Step 5: Solve for x
    x = 18,286,167,172.90/163,355.93
  6. Step 6: Final answer
    x = 111,940.64

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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.