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Finding the Fourth Proportional to 171,471.90, 257,499.45 and 127,148.70

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Solution

The fourth proportional to 171,471.90, 257,499.45 and 127,148.70 is: 190,939.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,471.90 : 257,499.45 = 127,148.70 : x
  2. Step 2: Convert to fraction form
    171,471.90/257,499.45 = 127,148.70/x
  3. Step 3: Cross multiply
    171,471.90x = 257,499.45 × 127,148.70
  4. Step 4: Simplify right side
    171,471.90x = 32,740,720,318.22
  5. Step 5: Solve for x
    x = 32,740,720,318.22/171,471.90
  6. Step 6: Final answer
    x = 190,939.28

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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.