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Finding the Fourth Proportional to 125,676.72, 173,407.70 and 74,707.47

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Solution

The fourth proportional to 125,676.72, 173,407.70 and 74,707.47 is: 103,080.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,676.72 : 173,407.70 = 74,707.47 : x
  2. Step 2: Convert to fraction form
    125,676.72/173,407.70 = 74,707.47/x
  3. Step 3: Cross multiply
    125,676.72x = 173,407.70 × 74,707.47
  4. Step 4: Simplify right side
    125,676.72x = 12,954,850,732.29
  5. Step 5: Solve for x
    x = 12,954,850,732.29/125,676.72
  6. Step 6: Final answer
    x = 103,080.75

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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.