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Finding the Fourth Proportional to 125,135.68, 172,692 and 71,429.44

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Solution

The fourth proportional to 125,135.68, 172,692 and 71,429.44 is: 98,575.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,135.68 : 172,692 = 71,429.44 : x
  2. Step 2: Convert to fraction form
    125,135.68/172,692 = 71,429.44/x
  3. Step 3: Cross multiply
    125,135.68x = 172,692 × 71,429.44
  4. Step 4: Simplify right side
    125,135.68x = 12,335,292,852.48
  5. Step 5: Solve for x
    x = 12,335,292,852.48/125,135.68
  6. Step 6: Final answer
    x = 98,575.35

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.