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Finding the Fourth Proportional to 178,988.34, 247,004.79 and 98,421.03

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Solution

The fourth proportional to 178,988.34, 247,004.79 and 98,421.03 is: 135,821.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,988.34 : 247,004.79 = 98,421.03 : x
  2. Step 2: Convert to fraction form
    178,988.34/247,004.79 = 98,421.03/x
  3. Step 3: Cross multiply
    178,988.34x = 247,004.79 × 98,421.03
  4. Step 4: Simplify right side
    178,988.34x = 24,310,465,846.73
  5. Step 5: Solve for x
    x = 24,310,465,846.73/178,988.34
  6. Step 6: Final answer
    x = 135,821.51

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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.