Home / 102,548.88-141,581.52-78,629.58

Finding the Fourth Proportional to 102,548.88, 141,581.52 and 78,629.58

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Solution

The fourth proportional to 102,548.88, 141,581.52 and 78,629.58 is: 108,557.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,548.88 : 141,581.52 = 78,629.58 : x
  2. Step 2: Convert to fraction form
    102,548.88/141,581.52 = 78,629.58/x
  3. Step 3: Cross multiply
    102,548.88x = 141,581.52 × 78,629.58
  4. Step 4: Simplify right side
    102,548.88x = 11,132,495,453.36
  5. Step 5: Solve for x
    x = 11,132,495,453.36/102,548.88
  6. Step 6: Final answer
    x = 108,557.94

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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.