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Finding the Fourth Proportional to 156,362, 234,543 and 68,810

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Solution

The fourth proportional to 156,362, 234,543 and 68,810 is: 103,215

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,362 : 234,543 = 68,810 : x
  2. Step 2: Convert to fraction form
    156,362/234,543 = 68,810/x
  3. Step 3: Cross multiply
    156,362x = 234,543 × 68,810
  4. Step 4: Simplify right side
    156,362x = 16,138,903,830
  5. Step 5: Solve for x
    x = 16,138,903,830/156,362
  6. Step 6: Final answer
    x = 103,215

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.