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Finding the Fourth Proportional to 163,821.60, 245,440.80 and 134,078.40

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Solution

The fourth proportional to 163,821.60, 245,440.80 and 134,078.40 is: 200,878.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,821.60 : 245,440.80 = 134,078.40 : x
  2. Step 2: Convert to fraction form
    163,821.60/245,440.80 = 134,078.40/x
  3. Step 3: Cross multiply
    163,821.60x = 245,440.80 × 134,078.40
  4. Step 4: Simplify right side
    163,821.60x = 32,908,309,758.72
  5. Step 5: Solve for x
    x = 32,908,309,758.72/163,821.60
  6. Step 6: Final answer
    x = 200,878.94

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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.