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Finding the Fourth Proportional to 178,143.40, 245,841.87 and 101,660.97

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Solution

The fourth proportional to 178,143.40, 245,841.87 and 101,660.97 is: 140,294.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,143.40 : 245,841.87 = 101,660.97 : x
  2. Step 2: Convert to fraction form
    178,143.40/245,841.87 = 101,660.97/x
  3. Step 3: Cross multiply
    178,143.40x = 245,841.87 × 101,660.97
  4. Step 4: Simplify right side
    178,143.40x = 24,992,522,970.81
  5. Step 5: Solve for x
    x = 24,992,522,970.81/178,143.40
  6. Step 6: Final answer
    x = 140,294.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.