Home / 141,509.76-195,311.38-81,120.92

Finding the Fourth Proportional to 141,509.76, 195,311.38 and 81,120.92

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Solution

The fourth proportional to 141,509.76, 195,311.38 and 81,120.92 is: 111,962.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,509.76 : 195,311.38 = 81,120.92 : x
  2. Step 2: Convert to fraction form
    141,509.76/195,311.38 = 81,120.92/x
  3. Step 3: Cross multiply
    141,509.76x = 195,311.38 × 81,120.92
  4. Step 4: Simplify right side
    141,509.76x = 15,843,838,832.07
  5. Step 5: Solve for x
    x = 15,843,838,832.07/141,509.76
  6. Step 6: Final answer
    x = 111,962.87

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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.