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Finding the Fourth Proportional to 104,102.70, 143,660.03 and 56,355.63

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Solution

The fourth proportional to 104,102.70, 143,660.03 and 56,355.63 is: 77,769.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,102.70 : 143,660.03 = 56,355.63 : x
  2. Step 2: Convert to fraction form
    104,102.70/143,660.03 = 56,355.63/x
  3. Step 3: Cross multiply
    104,102.70x = 143,660.03 × 56,355.63
  4. Step 4: Simplify right side
    104,102.70x = 8,096,051,214.69
  5. Step 5: Solve for x
    x = 8,096,051,214.69/104,102.70
  6. Step 6: Final answer
    x = 77,769.85

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1.5x scale

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.