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Finding the Fourth Proportional to 172,689.71, 238,246.29 and 104,681.88

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Solution

The fourth proportional to 172,689.71, 238,246.29 and 104,681.88 is: 144,421.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,689.71 : 238,246.29 = 104,681.88 : x
  2. Step 2: Convert to fraction form
    172,689.71/238,246.29 = 104,681.88/x
  3. Step 3: Cross multiply
    172,689.71x = 238,246.29 × 104,681.88
  4. Step 4: Simplify right side
    172,689.71x = 24,940,069,540.23
  5. Step 5: Solve for x
    x = 24,940,069,540.23/172,689.71
  6. Step 6: Final answer
    x = 144,421.29

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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.