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Finding the Fourth Proportional to 171,338.69, 257,097.95 and 70,211.81

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Solution

The fourth proportional to 171,338.69, 257,097.95 and 70,211.81 is: 105,354.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,338.69 : 257,097.95 = 70,211.81 : x
  2. Step 2: Convert to fraction form
    171,338.69/257,097.95 = 70,211.81/x
  3. Step 3: Cross multiply
    171,338.69x = 257,097.95 × 70,211.81
  4. Step 4: Simplify right side
    171,338.69x = 18,051,312,416.79
  5. Step 5: Solve for x
    x = 18,051,312,416.79/171,338.69
  6. Step 6: Final answer
    x = 105,354.56

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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.