Home / 141,721-195,557.96-81,288.52

Finding the Fourth Proportional to 141,721, 195,557.96 and 81,288.52

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Solution

The fourth proportional to 141,721, 195,557.96 and 81,288.52 is: 112,168.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,721 : 195,557.96 = 81,288.52 : x
  2. Step 2: Convert to fraction form
    141,721/195,557.96 = 81,288.52/x
  3. Step 3: Cross multiply
    141,721x = 195,557.96 × 81,288.52
  4. Step 4: Simplify right side
    141,721x = 15,896,617,142.62
  5. Step 5: Solve for x
    x = 15,896,617,142.62/141,721
  6. Step 6: Final answer
    x = 112,168.40

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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.