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Finding the Fourth Proportional to 104,491.40, 156,737.10 and 72,998.60

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Solution

The fourth proportional to 104,491.40, 156,737.10 and 72,998.60 is: 109,497.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,491.40 : 156,737.10 = 72,998.60 : x
  2. Step 2: Convert to fraction form
    104,491.40/156,737.10 = 72,998.60/x
  3. Step 3: Cross multiply
    104,491.40x = 156,737.10 × 72,998.60
  4. Step 4: Simplify right side
    104,491.40x = 11,441,588,868.06
  5. Step 5: Solve for x
    x = 11,441,588,868.06/104,491.40
  6. Step 6: Final answer
    x = 109,497.90

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1.5x scale

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.