Home / 103,285.24-142,519.92-57,961.48

Finding the Fourth Proportional to 103,285.24, 142,519.92 and 57,961.48

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Solution

The fourth proportional to 103,285.24, 142,519.92 and 57,961.48 is: 79,979.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,285.24 : 142,519.92 = 57,961.48 : x
  2. Step 2: Convert to fraction form
    103,285.24/142,519.92 = 57,961.48/x
  3. Step 3: Cross multiply
    103,285.24x = 142,519.92 × 57,961.48
  4. Step 4: Simplify right side
    103,285.24x = 8,260,665,492.68
  5. Step 5: Solve for x
    x = 8,260,665,492.68/103,285.24
  6. Step 6: Final answer
    x = 79,979.15

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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.