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Finding the Fourth Proportional to 118,055.79, 162,912.25 and 64,339.65

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Solution

The fourth proportional to 118,055.79, 162,912.25 and 64,339.65 is: 88,786.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,055.79 : 162,912.25 = 64,339.65 : x
  2. Step 2: Convert to fraction form
    118,055.79/162,912.25 = 64,339.65/x
  3. Step 3: Cross multiply
    118,055.79x = 162,912.25 × 64,339.65
  4. Step 4: Simplify right side
    118,055.79x = 10,481,717,595.78
  5. Step 5: Solve for x
    x = 10,481,717,595.78/118,055.79
  6. Step 6: Final answer
    x = 88,786.14

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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.