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Finding the Fourth Proportional to 171,172.80, 236,214 and 94,689.90

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Solution

The fourth proportional to 171,172.80, 236,214 and 94,689.90 is: 130,669.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,172.80 : 236,214 = 94,689.90 : x
  2. Step 2: Convert to fraction form
    171,172.80/236,214 = 94,689.90/x
  3. Step 3: Cross multiply
    171,172.80x = 236,214 × 94,689.90
  4. Step 4: Simplify right side
    171,172.80x = 22,367,080,038.60
  5. Step 5: Solve for x
    x = 22,367,080,038.60/171,172.80
  6. Step 6: Final answer
    x = 130,669.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.