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Finding the Fourth Proportional to 118,046.38, 162,904.02 and 64,331.40

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Solution

The fourth proportional to 118,046.38, 162,904.02 and 64,331.40 is: 88,777.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,046.38 : 162,904.02 = 64,331.40 : x
  2. Step 2: Convert to fraction form
    118,046.38/162,904.02 = 64,331.40/x
  3. Step 3: Cross multiply
    118,046.38x = 162,904.02 × 64,331.40
  4. Step 4: Simplify right side
    118,046.38x = 10,479,843,672.23
  5. Step 5: Solve for x
    x = 10,479,843,672.23/118,046.38
  6. Step 6: Final answer
    x = 88,777.34

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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.