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Finding the Fourth Proportional to 125,241.84, 172,844.64 and 68,664

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Solution

The fourth proportional to 125,241.84, 172,844.64 and 68,664 is: 94,762.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,241.84 : 172,844.64 = 68,664 : x
  2. Step 2: Convert to fraction form
    125,241.84/172,844.64 = 68,664/x
  3. Step 3: Cross multiply
    125,241.84x = 172,844.64 × 68,664
  4. Step 4: Simplify right side
    125,241.84x = 11,868,204,360.96
  5. Step 5: Solve for x
    x = 11,868,204,360.96/125,241.84
  6. Step 6: Final answer
    x = 94,762.30

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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.