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Finding the Fourth Proportional to 125,483.68, 173,118.09 and 71,739.82

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Solution

The fourth proportional to 125,483.68, 173,118.09 and 71,739.82 is: 98,972.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,483.68 : 173,118.09 = 71,739.82 : x
  2. Step 2: Convert to fraction form
    125,483.68/173,118.09 = 71,739.82/x
  3. Step 3: Cross multiply
    125,483.68x = 173,118.09 × 71,739.82
  4. Step 4: Simplify right side
    125,483.68x = 12,419,460,615.34
  5. Step 5: Solve for x
    x = 12,419,460,615.34/125,483.68
  6. Step 6: Final answer
    x = 98,972.72

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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.