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Finding the Fourth Proportional to 172,424.39, 258,300.30 and 97,317.32

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Solution

The fourth proportional to 172,424.39, 258,300.30 and 97,317.32 is: 145,786.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,424.39 : 258,300.30 = 97,317.32 : x
  2. Step 2: Convert to fraction form
    172,424.39/258,300.30 = 97,317.32/x
  3. Step 3: Cross multiply
    172,424.39x = 258,300.30 × 97,317.32
  4. Step 4: Simplify right side
    172,424.39x = 25,137,092,951.20
  5. Step 5: Solve for x
    x = 25,137,092,951.20/172,424.39
  6. Step 6: Final answer
    x = 145,786.18

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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.