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Finding the Fourth Proportional to 163,815, 245,608.48 and 72,580.88

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Solution

The fourth proportional to 163,815, 245,608.48 and 72,580.88 is: 108,820.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,815 : 245,608.48 = 72,580.88 : x
  2. Step 2: Convert to fraction form
    163,815/245,608.48 = 72,580.88/x
  3. Step 3: Cross multiply
    163,815x = 245,608.48 × 72,580.88
  4. Step 4: Simplify right side
    163,815x = 17,826,479,613.86
  5. Step 5: Solve for x
    x = 17,826,479,613.86/163,815
  6. Step 6: Final answer
    x = 108,820.80

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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.