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Finding the Fourth Proportional to 118,642.52, 178,015.62 and 92,307.80

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Solution

The fourth proportional to 118,642.52, 178,015.62 and 92,307.80 is: 138,502.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,642.52 : 178,015.62 = 92,307.80 : x
  2. Step 2: Convert to fraction form
    118,642.52/178,015.62 = 92,307.80/x
  3. Step 3: Cross multiply
    118,642.52x = 178,015.62 × 92,307.80
  4. Step 4: Simplify right side
    118,642.52x = 16,432,230,247.84
  5. Step 5: Solve for x
    x = 16,432,230,247.84/118,642.52
  6. Step 6: Final answer
    x = 138,502.03

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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.