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Finding the Fourth Proportional to 113,295.15, 169,997.40 and 79,943.40

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Solution

The fourth proportional to 113,295.15, 169,997.40 and 79,943.40 is: 119,953.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,295.15 : 169,997.40 = 79,943.40 : x
  2. Step 2: Convert to fraction form
    113,295.15/169,997.40 = 79,943.40/x
  3. Step 3: Cross multiply
    113,295.15x = 169,997.40 × 79,943.40
  4. Step 4: Simplify right side
    113,295.15x = 13,590,170,147.16
  5. Step 5: Solve for x
    x = 13,590,170,147.16/113,295.15
  6. Step 6: Final answer
    x = 119,953.68

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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.