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Finding the Fourth Proportional to 178,978.79, 246,984.09 and 98,401.51

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Solution

The fourth proportional to 178,978.79, 246,984.09 and 98,401.51 is: 135,790.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,978.79 : 246,984.09 = 98,401.51 : x
  2. Step 2: Convert to fraction form
    178,978.79/246,984.09 = 98,401.51/x
  3. Step 3: Cross multiply
    178,978.79x = 246,984.09 × 98,401.51
  4. Step 4: Simplify right side
    178,978.79x = 24,303,607,401.98
  5. Step 5: Solve for x
    x = 24,303,607,401.98/178,978.79
  6. Step 6: Final answer
    x = 135,790.43

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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.