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Finding the Fourth Proportional to 187,955.79, 259,390.80 and 103,072.88

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Solution

The fourth proportional to 187,955.79, 259,390.80 and 103,072.88 is: 142,247.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,955.79 : 259,390.80 = 103,072.88 : x
  2. Step 2: Convert to fraction form
    187,955.79/259,390.80 = 103,072.88/x
  3. Step 3: Cross multiply
    187,955.79x = 259,390.80 × 103,072.88
  4. Step 4: Simplify right side
    187,955.79x = 26,736,155,504.55
  5. Step 5: Solve for x
    x = 26,736,155,504.55/187,955.79
  6. Step 6: Final answer
    x = 142,247.04

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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.