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Finding the Fourth Proportional to 103,335.17, 154,599.90 and 90,583.70

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Solution

The fourth proportional to 103,335.17, 154,599.90 and 90,583.70 is: 135,522.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,335.17 : 154,599.90 = 90,583.70 : x
  2. Step 2: Convert to fraction form
    103,335.17/154,599.90 = 90,583.70/x
  3. Step 3: Cross multiply
    103,335.17x = 154,599.90 × 90,583.70
  4. Step 4: Simplify right side
    103,335.17x = 14,004,231,252.59
  5. Step 5: Solve for x
    x = 14,004,231,252.59/103,335.17
  6. Step 6: Final answer
    x = 135,522.41

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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.