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Finding the Fourth Proportional to 125,273.71, 172,876.57 and 68,683.87

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Solution

The fourth proportional to 125,273.71, 172,876.57 and 68,683.87 is: 94,783.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,273.71 : 172,876.57 = 68,683.87 : x
  2. Step 2: Convert to fraction form
    125,273.71/172,876.57 = 68,683.87/x
  3. Step 3: Cross multiply
    125,273.71x = 172,876.57 × 68,683.87
  4. Step 4: Simplify right side
    125,273.71x = 11,873,831,859.93
  5. Step 5: Solve for x
    x = 11,873,831,859.93/125,273.71
  6. Step 6: Final answer
    x = 94,783.11

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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.