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Finding the Fourth Proportional to 100,759.70, 151,148.01 and 30,639.62

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Solution

The fourth proportional to 100,759.70, 151,148.01 and 30,639.62 is: 45,962.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,759.70 : 151,148.01 = 30,639.62 : x
  2. Step 2: Convert to fraction form
    100,759.70/151,148.01 = 30,639.62/x
  3. Step 3: Cross multiply
    100,759.70x = 151,148.01 × 30,639.62
  4. Step 4: Simplify right side
    100,759.70x = 4,631,117,590.16
  5. Step 5: Solve for x
    x = 4,631,117,590.16/100,759.70
  6. Step 6: Final answer
    x = 45,962.00

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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.