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Finding the Fourth Proportional to 179,755.80, 269,730.90 and 79,931.40

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Solution

The fourth proportional to 179,755.80, 269,730.90 and 79,931.40 is: 119,940.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,755.80 : 269,730.90 = 79,931.40 : x
  2. Step 2: Convert to fraction form
    179,755.80/269,730.90 = 79,931.40/x
  3. Step 3: Cross multiply
    179,755.80x = 269,730.90 × 79,931.40
  4. Step 4: Simplify right side
    179,755.80x = 21,559,968,460.26
  5. Step 5: Solve for x
    x = 21,559,968,460.26/179,755.80
  6. Step 6: Final answer
    x = 119,940.32

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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.