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Finding the Fourth Proportional to 125,114.12, 172,654.98 and 68,525

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Solution

The fourth proportional to 125,114.12, 172,654.98 and 68,525 is: 94,563.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,114.12 : 172,654.98 = 68,525 : x
  2. Step 2: Convert to fraction form
    125,114.12/172,654.98 = 68,525/x
  3. Step 3: Cross multiply
    125,114.12x = 172,654.98 × 68,525
  4. Step 4: Simplify right side
    125,114.12x = 11,831,182,504.50
  5. Step 5: Solve for x
    x = 11,831,182,504.50/125,114.12
  6. Step 6: Final answer
    x = 94,563.13

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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.