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Finding the Fourth Proportional to 171,387.40, 257,475.24 and 120,902.62

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Solution

The fourth proportional to 171,387.40, 257,475.24 and 120,902.62 is: 181,631.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,387.40 : 257,475.24 = 120,902.62 : x
  2. Step 2: Convert to fraction form
    171,387.40/257,475.24 = 120,902.62/x
  3. Step 3: Cross multiply
    171,387.40x = 257,475.24 × 120,902.62
  4. Step 4: Simplify right side
    171,387.40x = 31,129,430,457.44
  5. Step 5: Solve for x
    x = 31,129,430,457.44/171,387.40
  6. Step 6: Final answer
    x = 181,631.97

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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.