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Finding the Fourth Proportional to 163,904.80, 245,824.80 and 79,664.80

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Solution

The fourth proportional to 163,904.80, 245,824.80 and 79,664.80 is: 119,481.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,904.80 : 245,824.80 = 79,664.80 : x
  2. Step 2: Convert to fraction form
    163,904.80/245,824.80 = 79,664.80/x
  3. Step 3: Cross multiply
    163,904.80x = 245,824.80 × 79,664.80
  4. Step 4: Simplify right side
    163,904.80x = 19,583,583,527.04
  5. Step 5: Solve for x
    x = 19,583,583,527.04/163,904.80
  6. Step 6: Final answer
    x = 119,481.45

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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.