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Finding the Fourth Proportional to 171,678.45, 257,631.93 and 70,559.43

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Solution

The fourth proportional to 171,678.45, 257,631.93 and 70,559.43 is: 105,886.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,678.45 : 257,631.93 = 70,559.43 : x
  2. Step 2: Convert to fraction form
    171,678.45/257,631.93 = 70,559.43/x
  3. Step 3: Cross multiply
    171,678.45x = 257,631.93 × 70,559.43
  4. Step 4: Simplify right side
    171,678.45x = 18,178,360,842.44
  5. Step 5: Solve for x
    x = 18,178,360,842.44/171,678.45
  6. Step 6: Final answer
    x = 105,886.10

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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.