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Finding the Fourth Proportional to 186,080.84, 256,786.08 and 105,515.72

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Solution

The fourth proportional to 186,080.84, 256,786.08 and 105,515.72 is: 145,608.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,080.84 : 256,786.08 = 105,515.72 : x
  2. Step 2: Convert to fraction form
    186,080.84/256,786.08 = 105,515.72/x
  3. Step 3: Cross multiply
    186,080.84x = 256,786.08 × 105,515.72
  4. Step 4: Simplify right side
    186,080.84x = 27,094,968,363.46
  5. Step 5: Solve for x
    x = 27,094,968,363.46/186,080.84
  6. Step 6: Final answer
    x = 145,608.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.