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Finding the Fourth Proportional to 178,659, 246,756.78 and 118,939.32

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Solution

The fourth proportional to 178,659, 246,756.78 and 118,939.32 is: 164,274.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,659 : 246,756.78 = 118,939.32 : x
  2. Step 2: Convert to fraction form
    178,659/246,756.78 = 118,939.32/x
  3. Step 3: Cross multiply
    178,659x = 246,756.78 × 118,939.32
  4. Step 4: Simplify right side
    178,659x = 29,349,083,618.59
  5. Step 5: Solve for x
    x = 29,349,083,618.59/178,659
  6. Step 6: Final answer
    x = 164,274.31

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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.