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Finding the Fourth Proportional to 171,853.70, 257,777.70 and 70,631.24

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Solution

The fourth proportional to 171,853.70, 257,777.70 and 70,631.24 is: 105,945.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,853.70 : 257,777.70 = 70,631.24 : x
  2. Step 2: Convert to fraction form
    171,853.70/257,777.70 = 70,631.24/x
  3. Step 3: Cross multiply
    171,853.70x = 257,777.70 × 70,631.24
  4. Step 4: Simplify right side
    171,853.70x = 18,207,158,595.35
  5. Step 5: Solve for x
    x = 18,207,158,595.35/171,853.70
  6. Step 6: Final answer
    x = 105,945.69

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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.