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Finding the Fourth Proportional to 118,574.60, 178,000.80 and 93,631.46

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Solution

The fourth proportional to 118,574.60, 178,000.80 and 93,631.46 is: 140,556.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,574.60 : 178,000.80 = 93,631.46 : x
  2. Step 2: Convert to fraction form
    118,574.60/178,000.80 = 93,631.46/x
  3. Step 3: Cross multiply
    118,574.60x = 178,000.80 × 93,631.46
  4. Step 4: Simplify right side
    118,574.60x = 16,666,474,785.17
  5. Step 5: Solve for x
    x = 16,666,474,785.17/118,574.60
  6. Step 6: Final answer
    x = 140,556.87

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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.