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Finding the Fourth Proportional to 103,504.97, 155,146.73 and 53,534.76

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Solution

The fourth proportional to 103,504.97, 155,146.73 and 53,534.76 is: 80,244.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,504.97 : 155,146.73 = 53,534.76 : x
  2. Step 2: Convert to fraction form
    103,504.97/155,146.73 = 53,534.76/x
  3. Step 3: Cross multiply
    103,504.97x = 155,146.73 × 53,534.76
  4. Step 4: Simplify right side
    103,504.97x = 8,305,742,105.86
  5. Step 5: Solve for x
    x = 8,305,742,105.86/103,504.97
  6. Step 6: Final answer
    x = 80,244.86

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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.