Home / 149,368.80-206,126.34-81,386.34

Finding the Fourth Proportional to 149,368.80, 206,126.34 and 81,386.34

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Solution

The fourth proportional to 149,368.80, 206,126.34 and 81,386.34 is: 112,311.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,368.80 : 206,126.34 = 81,386.34 : x
  2. Step 2: Convert to fraction form
    149,368.80/206,126.34 = 81,386.34/x
  3. Step 3: Cross multiply
    149,368.80x = 206,126.34 × 81,386.34
  4. Step 4: Simplify right side
    149,368.80x = 16,775,867,464.62
  5. Step 5: Solve for x
    x = 16,775,867,464.62/149,368.80
  6. Step 6: Final answer
    x = 112,311.72

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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.