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Finding the Fourth Proportional to 102,990.90, 154,583.55 and 63,624.90

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Solution

The fourth proportional to 102,990.90, 154,583.55 and 63,624.90 is: 95,497.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,990.90 : 154,583.55 = 63,624.90 : x
  2. Step 2: Convert to fraction form
    102,990.90/154,583.55 = 63,624.90/x
  3. Step 3: Cross multiply
    102,990.90x = 154,583.55 × 63,624.90
  4. Step 4: Simplify right side
    102,990.90x = 9,835,362,910.40
  5. Step 5: Solve for x
    x = 9,835,362,910.40/102,990.90
  6. Step 6: Final answer
    x = 95,497.40

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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.