Home / 149,500.43-206,303.01-81,516.86

Finding the Fourth Proportional to 149,500.43, 206,303.01 and 81,516.86

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Solution

The fourth proportional to 149,500.43, 206,303.01 and 81,516.86 is: 112,489.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,500.43 : 206,303.01 = 81,516.86 : x
  2. Step 2: Convert to fraction form
    149,500.43/206,303.01 = 81,516.86/x
  3. Step 3: Cross multiply
    149,500.43x = 206,303.01 × 81,516.86
  4. Step 4: Simplify right side
    149,500.43x = 16,817,173,013.12
  5. Step 5: Solve for x
    x = 16,817,173,013.12/149,500.43
  6. Step 6: Final answer
    x = 112,489.12

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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.