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Finding the Fourth Proportional to 169,785.89, 254,678.28 and 43,426.19

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Solution

The fourth proportional to 169,785.89, 254,678.28 and 43,426.19 is: 65,139.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,785.89 : 254,678.28 = 43,426.19 : x
  2. Step 2: Convert to fraction form
    169,785.89/254,678.28 = 43,426.19/x
  3. Step 3: Cross multiply
    169,785.89x = 254,678.28 × 43,426.19
  4. Step 4: Simplify right side
    169,785.89x = 11,059,707,850.00
  5. Step 5: Solve for x
    x = 11,059,707,850.00/169,785.89
  6. Step 6: Final answer
    x = 65,139.15

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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.