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Finding the Fourth Proportional to 172,958, 238,682.36 and 93,470

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Solution

The fourth proportional to 172,958, 238,682.36 and 93,470 is: 128,988.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,958 : 238,682.36 = 93,470 : x
  2. Step 2: Convert to fraction form
    172,958/238,682.36 = 93,470/x
  3. Step 3: Cross multiply
    172,958x = 238,682.36 × 93,470
  4. Step 4: Simplify right side
    172,958x = 22,309,640,189.20
  5. Step 5: Solve for x
    x = 22,309,640,189.20/172,958
  6. Step 6: Final answer
    x = 128,988.77

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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.