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Finding the Fourth Proportional to 105,896.76, 158,864.58 and 39,382.80

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Solution

The fourth proportional to 105,896.76, 158,864.58 and 39,382.80 is: 59,081.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,896.76 : 158,864.58 = 39,382.80 : x
  2. Step 2: Convert to fraction form
    105,896.76/158,864.58 = 39,382.80/x
  3. Step 3: Cross multiply
    105,896.76x = 158,864.58 × 39,382.80
  4. Step 4: Simplify right side
    105,896.76x = 6,256,531,981.22
  5. Step 5: Solve for x
    x = 6,256,531,981.22/105,896.76
  6. Step 6: Final answer
    x = 59,081.43

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1.5x scale

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.