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Finding the Fourth Proportional to 208,065.59, 312,072.09 and 65,925.29

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Solution

The fourth proportional to 208,065.59, 312,072.09 and 65,925.29 is: 98,879.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,065.59 : 312,072.09 = 65,925.29 : x
  2. Step 2: Convert to fraction form
    208,065.59/312,072.09 = 65,925.29/x
  3. Step 3: Cross multiply
    208,065.59x = 312,072.09 × 65,925.29
  4. Step 4: Simplify right side
    208,065.59x = 20,573,443,034.16
  5. Step 5: Solve for x
    x = 20,573,443,034.16/208,065.59
  6. Step 6: Final answer
    x = 98,879.60

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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.