Home / 125,103.21-172,654.76-71,396.31

Finding the Fourth Proportional to 125,103.21, 172,654.76 and 71,396.31

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Solution

The fourth proportional to 125,103.21, 172,654.76 and 71,396.31 is: 98,533.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,103.21 : 172,654.76 = 71,396.31 : x
  2. Step 2: Convert to fraction form
    125,103.21/172,654.76 = 71,396.31/x
  3. Step 3: Cross multiply
    125,103.21x = 172,654.76 × 71,396.31
  4. Step 4: Simplify right side
    125,103.21x = 12,326,912,410.95
  5. Step 5: Solve for x
    x = 12,326,912,410.95/125,103.21
  6. Step 6: Final answer
    x = 98,533.94

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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.