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Finding the Fourth Proportional to 135,256.56, 186,659.56 and 74,826.16

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Solution

The fourth proportional to 135,256.56, 186,659.56 and 74,826.16 is: 103,263.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,256.56 : 186,659.56 = 74,826.16 : x
  2. Step 2: Convert to fraction form
    135,256.56/186,659.56 = 74,826.16/x
  3. Step 3: Cross multiply
    135,256.56x = 186,659.56 × 74,826.16
  4. Step 4: Simplify right side
    135,256.56x = 13,967,018,102.09
  5. Step 5: Solve for x
    x = 13,967,018,102.09/135,256.56
  6. Step 6: Final answer
    x = 103,263.15

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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.