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Finding the Fourth Proportional to 118,662.31, 178,116.48 and 79,493.14

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Solution

The fourth proportional to 118,662.31, 178,116.48 and 79,493.14 is: 119,322.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,662.31 : 178,116.48 = 79,493.14 : x
  2. Step 2: Convert to fraction form
    118,662.31/178,116.48 = 79,493.14/x
  3. Step 3: Cross multiply
    118,662.31x = 178,116.48 × 79,493.14
  4. Step 4: Simplify right side
    118,662.31x = 14,159,038,280.95
  5. Step 5: Solve for x
    x = 14,159,038,280.95/118,662.31
  6. Step 6: Final answer
    x = 119,322.12

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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.