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Finding the Fourth Proportional to 171,951.80, 257,927.70 and 118,807.70

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Solution

The fourth proportional to 171,951.80, 257,927.70 and 118,807.70 is: 178,211.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,951.80 : 257,927.70 = 118,807.70 : x
  2. Step 2: Convert to fraction form
    171,951.80/257,927.70 = 118,807.70/x
  3. Step 3: Cross multiply
    171,951.80x = 257,927.70 × 118,807.70
  4. Step 4: Simplify right side
    171,951.80x = 30,643,796,803.29
  5. Step 5: Solve for x
    x = 30,643,796,803.29/171,951.80
  6. Step 6: Final answer
    x = 178,211.55

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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.