Home / 149,228.66-205,938.11-81,247.59

Finding the Fourth Proportional to 149,228.66, 205,938.11 and 81,247.59

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Solution

The fourth proportional to 149,228.66, 205,938.11 and 81,247.59 is: 112,123.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,228.66 : 205,938.11 = 81,247.59 : x
  2. Step 2: Convert to fraction form
    149,228.66/205,938.11 = 81,247.59/x
  3. Step 3: Cross multiply
    149,228.66x = 205,938.11 × 81,247.59
  4. Step 4: Simplify right side
    149,228.66x = 16,731,975,329.77
  5. Step 5: Solve for x
    x = 16,731,975,329.77/149,228.66
  6. Step 6: Final answer
    x = 112,123.07

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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.