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Finding the Fourth Proportional to 118,750.28, 178,245.45 and 105,329.45

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Solution

The fourth proportional to 118,750.28, 178,245.45 and 105,329.45 is: 158,100.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,750.28 : 178,245.45 = 105,329.45 : x
  2. Step 2: Convert to fraction form
    118,750.28/178,245.45 = 105,329.45/x
  3. Step 3: Cross multiply
    118,750.28x = 178,245.45 × 105,329.45
  4. Step 4: Simplify right side
    118,750.28x = 18,774,495,926.88
  5. Step 5: Solve for x
    x = 18,774,495,926.88/118,750.28
  6. Step 6: Final answer
    x = 158,100.64

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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.