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Finding the Fourth Proportional to 172,779.66, 238,447.89 and 104,799.50

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Solution

The fourth proportional to 172,779.66, 238,447.89 and 104,799.50 is: 144,630.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,779.66 : 238,447.89 = 104,799.50 : x
  2. Step 2: Convert to fraction form
    172,779.66/238,447.89 = 104,799.50/x
  3. Step 3: Cross multiply
    172,779.66x = 238,447.89 × 104,799.50
  4. Step 4: Simplify right side
    172,779.66x = 24,989,218,974.11
  5. Step 5: Solve for x
    x = 24,989,218,974.11/172,779.66
  6. Step 6: Final answer
    x = 144,630.56

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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.