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Finding the Fourth Proportional to 183,939.98, 275,851.64 and 78,730.70

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Solution

The fourth proportional to 183,939.98, 275,851.64 and 78,730.70 is: 118,071.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    183,939.98 : 275,851.64 = 78,730.70 : x
  2. Step 2: Convert to fraction form
    183,939.98/275,851.64 = 78,730.70/x
  3. Step 3: Cross multiply
    183,939.98x = 275,851.64 × 78,730.70
  4. Step 4: Simplify right side
    183,939.98x = 21,717,992,713.35
  5. Step 5: Solve for x
    x = 21,717,992,713.35/183,939.98
  6. Step 6: Final answer
    x = 118,071.08

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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.