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Finding the Fourth Proportional to 158,861.69, 238,347.21 and 99,628.01

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Solution

The fourth proportional to 158,861.69, 238,347.21 and 99,628.01 is: 149,476.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,861.69 : 238,347.21 = 99,628.01 : x
  2. Step 2: Convert to fraction form
    158,861.69/238,347.21 = 99,628.01/x
  3. Step 3: Cross multiply
    158,861.69x = 238,347.21 × 99,628.01
  4. Step 4: Simplify right side
    158,861.69x = 23,746,057,029.62
  5. Step 5: Solve for x
    x = 23,746,057,029.62/158,861.69
  6. Step 6: Final answer
    x = 149,476.30

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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.