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Finding the Fourth Proportional to 171,373.82, 257,113.27 and 76,683.71

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Solution

The fourth proportional to 171,373.82, 257,113.27 and 76,683.71 is: 115,049.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,373.82 : 257,113.27 = 76,683.71 : x
  2. Step 2: Convert to fraction form
    171,373.82/257,113.27 = 76,683.71/x
  3. Step 3: Cross multiply
    171,373.82x = 257,113.27 × 76,683.71
  4. Step 4: Simplify right side
    171,373.82x = 19,716,400,172.47
  5. Step 5: Solve for x
    x = 19,716,400,172.47/171,373.82
  6. Step 6: Final answer
    x = 115,049.08

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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.