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Finding the Fourth Proportional to 156,355, 234,532.50 and 68,803

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Solution

The fourth proportional to 156,355, 234,532.50 and 68,803 is: 103,204.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,355 : 234,532.50 = 68,803 : x
  2. Step 2: Convert to fraction form
    156,355/234,532.50 = 68,803/x
  3. Step 3: Cross multiply
    156,355x = 234,532.50 × 68,803
  4. Step 4: Simplify right side
    156,355x = 16,136,539,597.50
  5. Step 5: Solve for x
    x = 16,136,539,597.50/156,355
  6. Step 6: Final answer
    x = 103,204.50

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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.