Home / 138,899.43-191,506.95-113,379.86

Finding the Fourth Proportional to 138,899.43, 191,506.95 and 113,379.86

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Solution

The fourth proportional to 138,899.43, 191,506.95 and 113,379.86 is: 156,321.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,899.43 : 191,506.95 = 113,379.86 : x
  2. Step 2: Convert to fraction form
    138,899.43/191,506.95 = 113,379.86/x
  3. Step 3: Cross multiply
    138,899.43x = 191,506.95 × 113,379.86
  4. Step 4: Simplify right side
    138,899.43x = 21,713,030,222.49
  5. Step 5: Solve for x
    x = 21,713,030,222.49/138,899.43
  6. Step 6: Final answer
    x = 156,321.95

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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.