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Finding the Fourth Proportional to 163,690.80, 245,406.60 and 89,818.80

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Solution

The fourth proportional to 163,690.80, 245,406.60 and 89,818.80 is: 134,657.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,690.80 : 245,406.60 = 89,818.80 : x
  2. Step 2: Convert to fraction form
    163,690.80/245,406.60 = 89,818.80/x
  3. Step 3: Cross multiply
    163,690.80x = 245,406.60 × 89,818.80
  4. Step 4: Simplify right side
    163,690.80x = 22,042,126,324.08
  5. Step 5: Solve for x
    x = 22,042,126,324.08/163,690.80
  6. Step 6: Final answer
    x = 134,657.09

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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.