Home / 117,738.81-162,907.43-102,662.90

Finding the Fourth Proportional to 117,738.81, 162,907.43 and 102,662.90

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Solution

The fourth proportional to 117,738.81, 162,907.43 and 102,662.90 is: 142,047.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,738.81 : 162,907.43 = 102,662.90 : x
  2. Step 2: Convert to fraction form
    117,738.81/162,907.43 = 102,662.90/x
  3. Step 3: Cross multiply
    117,738.81x = 162,907.43 × 102,662.90
  4. Step 4: Simplify right side
    117,738.81x = 16,724,547,867.50
  5. Step 5: Solve for x
    x = 16,724,547,867.50/117,738.81
  6. Step 6: Final answer
    x = 142,047.88

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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.