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Finding the Fourth Proportional to 171,957.20, 257,935.80 and 108,971.60

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Solution

The fourth proportional to 171,957.20, 257,935.80 and 108,971.60 is: 163,457.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,957.20 : 257,935.80 = 108,971.60 : x
  2. Step 2: Convert to fraction form
    171,957.20/257,935.80 = 108,971.60/x
  3. Step 3: Cross multiply
    171,957.20x = 257,935.80 × 108,971.60
  4. Step 4: Simplify right side
    171,957.20x = 28,107,676,823.28
  5. Step 5: Solve for x
    x = 28,107,676,823.28/171,957.20
  6. Step 6: Final answer
    x = 163,457.40

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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.