Home / 121,536.43-167,709.33-76,199.92

Finding the Fourth Proportional to 121,536.43, 167,709.33 and 76,199.92

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Solution

The fourth proportional to 121,536.43, 167,709.33 and 76,199.92 is: 105,149.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,536.43 : 167,709.33 = 76,199.92 : x
  2. Step 2: Convert to fraction form
    121,536.43/167,709.33 = 76,199.92/x
  3. Step 3: Cross multiply
    121,536.43x = 167,709.33 × 76,199.92
  4. Step 4: Simplify right side
    121,536.43x = 12,779,437,109.98
  5. Step 5: Solve for x
    x = 12,779,437,109.98/121,536.43
  6. Step 6: Final answer
    x = 105,149.03

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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.