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Finding the Fourth Proportional to 171,927.70, 257,891.55 and 105,442.90

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Solution

The fourth proportional to 171,927.70, 257,891.55 and 105,442.90 is: 158,164.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,927.70 : 257,891.55 = 105,442.90 : x
  2. Step 2: Convert to fraction form
    171,927.70/257,891.55 = 105,442.90/x
  3. Step 3: Cross multiply
    171,927.70x = 257,891.55 × 105,442.90
  4. Step 4: Simplify right side
    171,927.70x = 27,192,832,917.50
  5. Step 5: Solve for x
    x = 27,192,832,917.50/171,927.70
  6. Step 6: Final answer
    x = 158,164.35

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1.5x scale

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.