Home / 149,174.11-205,861.95-81,191.51

Finding the Fourth Proportional to 149,174.11, 205,861.95 and 81,191.51

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Solution

The fourth proportional to 149,174.11, 205,861.95 and 81,191.51 is: 112,045.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,174.11 : 205,861.95 = 81,191.51 : x
  2. Step 2: Convert to fraction form
    149,174.11/205,861.95 = 81,191.51/x
  3. Step 3: Cross multiply
    149,174.11x = 205,861.95 × 81,191.51
  4. Step 4: Simplify right side
    149,174.11x = 16,714,242,166.09
  5. Step 5: Solve for x
    x = 16,714,242,166.09/149,174.11
  6. Step 6: Final answer
    x = 112,045.20

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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.