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Finding the Fourth Proportional to 118,114.74, 162,995.38 and 64,400.80

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Solution

The fourth proportional to 118,114.74, 162,995.38 and 64,400.80 is: 88,871.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,114.74 : 162,995.38 = 64,400.80 : x
  2. Step 2: Convert to fraction form
    118,114.74/162,995.38 = 64,400.80/x
  3. Step 3: Cross multiply
    118,114.74x = 162,995.38 × 64,400.80
  4. Step 4: Simplify right side
    118,114.74x = 10,497,032,868.30
  5. Step 5: Solve for x
    x = 10,497,032,868.30/118,114.74
  6. Step 6: Final answer
    x = 88,871.49

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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.