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Finding the Fourth Proportional to 163,409.12, 245,166.48 and 80,244.80

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Solution

The fourth proportional to 163,409.12, 245,166.48 and 80,244.80 is: 120,393.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,409.12 : 245,166.48 = 80,244.80 : x
  2. Step 2: Convert to fraction form
    163,409.12/245,166.48 = 80,244.80/x
  3. Step 3: Cross multiply
    163,409.12x = 245,166.48 × 80,244.80
  4. Step 4: Simplify right side
    163,409.12x = 19,673,335,154.30
  5. Step 5: Solve for x
    x = 19,673,335,154.30/163,409.12
  6. Step 6: Final answer
    x = 120,393.13

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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.