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Finding the Fourth Proportional to 171,612, 257,117.76 and 119,054.88

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Solution

The fourth proportional to 171,612, 257,117.76 and 119,054.88 is: 178,374.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,612 : 257,117.76 = 119,054.88 : x
  2. Step 2: Convert to fraction form
    171,612/257,117.76 = 119,054.88/x
  3. Step 3: Cross multiply
    171,612x = 257,117.76 × 119,054.88
  4. Step 4: Simplify right side
    171,612x = 30,611,124,062.67
  5. Step 5: Solve for x
    x = 30,611,124,062.67/171,612
  6. Step 6: Final answer
    x = 178,374.03

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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.