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Finding the Fourth Proportional to 172,690.47, 238,247.31 and 104,682.63

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Solution

The fourth proportional to 172,690.47, 238,247.31 and 104,682.63 is: 144,422.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,690.47 : 238,247.31 = 104,682.63 : x
  2. Step 2: Convert to fraction form
    172,690.47/238,247.31 = 104,682.63/x
  3. Step 3: Cross multiply
    172,690.47x = 238,247.31 × 104,682.63
  4. Step 4: Simplify right side
    172,690.47x = 24,940,355,001.23
  5. Step 5: Solve for x
    x = 24,940,355,001.23/172,690.47
  6. Step 6: Final answer
    x = 144,422.30

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1.5x scale

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.