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Finding the Fourth Proportional to 171,901.20, 257,851.80 and 162,059.70

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Solution

The fourth proportional to 171,901.20, 257,851.80 and 162,059.70 is: 243,089.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,901.20 : 257,851.80 = 162,059.70 : x
  2. Step 2: Convert to fraction form
    171,901.20/257,851.80 = 162,059.70/x
  3. Step 3: Cross multiply
    171,901.20x = 257,851.80 × 162,059.70
  4. Step 4: Simplify right side
    171,901.20x = 41,787,385,352.46
  5. Step 5: Solve for x
    x = 41,787,385,352.46/171,901.20
  6. Step 6: Final answer
    x = 243,089.55

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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.