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Finding the Fourth Proportional to 103,951.70, 156,000.45 and 66,602.60

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Solution

The fourth proportional to 103,951.70, 156,000.45 and 66,602.60 is: 99,950.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,951.70 : 156,000.45 = 66,602.60 : x
  2. Step 2: Convert to fraction form
    103,951.70/156,000.45 = 66,602.60/x
  3. Step 3: Cross multiply
    103,951.70x = 156,000.45 × 66,602.60
  4. Step 4: Simplify right side
    103,951.70x = 10,390,035,571.17
  5. Step 5: Solve for x
    x = 10,390,035,571.17/103,951.70
  6. Step 6: Final answer
    x = 99,950.61

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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.