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Finding the Fourth Proportional to 118,990.62, 164,206.10 and 64,542.65

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Solution

The fourth proportional to 118,990.62, 164,206.10 and 64,542.65 is: 89,068.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,990.62 : 164,206.10 = 64,542.65 : x
  2. Step 2: Convert to fraction form
    118,990.62/164,206.10 = 64,542.65/x
  3. Step 3: Cross multiply
    118,990.62x = 164,206.10 × 64,542.65
  4. Step 4: Simplify right side
    118,990.62x = 10,598,295,696.42
  5. Step 5: Solve for x
    x = 10,598,295,696.42/118,990.62
  6. Step 6: Final answer
    x = 89,068.33

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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.