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Finding the Fourth Proportional to 118,666.66, 178,014.66 and 43,787.20

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Solution

The fourth proportional to 118,666.66, 178,014.66 and 43,787.20 is: 65,686.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,666.66 : 178,014.66 = 43,787.20 : x
  2. Step 2: Convert to fraction form
    118,666.66/178,014.66 = 43,787.20/x
  3. Step 3: Cross multiply
    118,666.66x = 178,014.66 × 43,787.20
  4. Step 4: Simplify right side
    118,666.66x = 7,794,763,520.35
  5. Step 5: Solve for x
    x = 7,794,763,520.35/118,666.66
  6. Step 6: Final answer
    x = 65,686.21

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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.