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Finding the Fourth Proportional to 171,967.20, 257,950.80 and 108,981.60

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Solution

The fourth proportional to 171,967.20, 257,950.80 and 108,981.60 is: 163,472.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,967.20 : 257,950.80 = 108,981.60 : x
  2. Step 2: Convert to fraction form
    171,967.20/257,950.80 = 108,981.60/x
  3. Step 3: Cross multiply
    171,967.20x = 257,950.80 × 108,981.60
  4. Step 4: Simplify right side
    171,967.20x = 28,111,890,905.28
  5. Step 5: Solve for x
    x = 28,111,890,905.28/171,967.20
  6. Step 6: Final answer
    x = 163,472.40

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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.