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Finding the Fourth Proportional to 103,037.60, 154,410.60 and 90,498.80

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Solution

The fourth proportional to 103,037.60, 154,410.60 and 90,498.80 is: 135,620.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,037.60 : 154,410.60 = 90,498.80 : x
  2. Step 2: Convert to fraction form
    103,037.60/154,410.60 = 90,498.80/x
  3. Step 3: Cross multiply
    103,037.60x = 154,410.60 × 90,498.80
  4. Step 4: Simplify right side
    103,037.60x = 13,973,974,007.28
  5. Step 5: Solve for x
    x = 13,973,974,007.28/103,037.60
  6. Step 6: Final answer
    x = 135,620.14

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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.