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Finding the Fourth Proportional to 171,406.80, 257,110.20 and 71,533.80

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Solution

The fourth proportional to 171,406.80, 257,110.20 and 71,533.80 is: 107,300.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,406.80 : 257,110.20 = 71,533.80 : x
  2. Step 2: Convert to fraction form
    171,406.80/257,110.20 = 71,533.80/x
  3. Step 3: Cross multiply
    171,406.80x = 257,110.20 × 71,533.80
  4. Step 4: Simplify right side
    171,406.80x = 18,392,069,624.76
  5. Step 5: Solve for x
    x = 18,392,069,624.76/171,406.80
  6. Step 6: Final answer
    x = 107,300.70

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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.