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Finding the Fourth Proportional to 172,993.01, 238,689.67 and 105,008.29

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Solution

The fourth proportional to 172,993.01, 238,689.67 and 105,008.29 is: 144,886.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,993.01 : 238,689.67 = 105,008.29 : x
  2. Step 2: Convert to fraction form
    172,993.01/238,689.67 = 105,008.29/x
  3. Step 3: Cross multiply
    172,993.01x = 238,689.67 × 105,008.29
  4. Step 4: Simplify right side
    172,993.01x = 25,064,392,368.87
  5. Step 5: Solve for x
    x = 25,064,392,368.87/172,993.01
  6. Step 6: Final answer
    x = 144,886.74

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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.