Home / 149,049.85-205,686.75-81,065.35

Finding the Fourth Proportional to 149,049.85, 205,686.75 and 81,065.35

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Solution

The fourth proportional to 149,049.85, 205,686.75 and 81,065.35 is: 111,869.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,049.85 : 205,686.75 = 81,065.35 : x
  2. Step 2: Convert to fraction form
    149,049.85/205,686.75 = 81,065.35/x
  3. Step 3: Cross multiply
    149,049.85x = 205,686.75 × 81,065.35
  4. Step 4: Simplify right side
    149,049.85x = 16,674,068,379.11
  5. Step 5: Solve for x
    x = 16,674,068,379.11/149,049.85
  6. Step 6: Final answer
    x = 111,869.07

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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.