Home / 102,638.20-141,679.56-88,240.36

Finding the Fourth Proportional to 102,638.20, 141,679.56 and 88,240.36

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Solution

The fourth proportional to 102,638.20, 141,679.56 and 88,240.36 is: 121,805.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,638.20 : 141,679.56 = 88,240.36 : x
  2. Step 2: Convert to fraction form
    102,638.20/141,679.56 = 88,240.36/x
  3. Step 3: Cross multiply
    102,638.20x = 141,679.56 × 88,240.36
  4. Step 4: Simplify right side
    102,638.20x = 12,501,855,379.04
  5. Step 5: Solve for x
    x = 12,501,855,379.04/102,638.20
  6. Step 6: Final answer
    x = 121,805.09

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1.5x scale

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.