Home / 141,635.72-195,457.92-81,209.90

Finding the Fourth Proportional to 141,635.72, 195,457.92 and 81,209.90

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Solution

The fourth proportional to 141,635.72, 195,457.92 and 81,209.90 is: 112,070.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,635.72 : 195,457.92 = 81,209.90 : x
  2. Step 2: Convert to fraction form
    141,635.72/195,457.92 = 81,209.90/x
  3. Step 3: Cross multiply
    141,635.72x = 195,457.92 × 81,209.90
  4. Step 4: Simplify right side
    141,635.72x = 15,873,118,137.41
  5. Step 5: Solve for x
    x = 15,873,118,137.41/141,635.72
  6. Step 6: Final answer
    x = 112,070.02

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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.