Home / 102,418.04-141,256.78-66,619.49

Finding the Fourth Proportional to 102,418.04, 141,256.78 and 66,619.49

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Solution

The fourth proportional to 102,418.04, 141,256.78 and 66,619.49 is: 91,882.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,418.04 : 141,256.78 = 66,619.49 : x
  2. Step 2: Convert to fraction form
    102,418.04/141,256.78 = 66,619.49/x
  3. Step 3: Cross multiply
    102,418.04x = 141,256.78 × 66,619.49
  4. Step 4: Simplify right side
    102,418.04x = 9,410,453,769.81
  5. Step 5: Solve for x
    x = 9,410,453,769.81/102,418.04
  6. Step 6: Final answer
    x = 91,882.77

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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.