Home / 103,542.76-142,536.40-76,634.56

Finding the Fourth Proportional to 103,542.76, 142,536.40 and 76,634.56

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Solution

The fourth proportional to 103,542.76, 142,536.40 and 76,634.56 is: 105,494.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,542.76 : 142,536.40 = 76,634.56 : x
  2. Step 2: Convert to fraction form
    103,542.76/142,536.40 = 76,634.56/x
  3. Step 3: Cross multiply
    103,542.76x = 142,536.40 × 76,634.56
  4. Step 4: Simplify right side
    103,542.76x = 10,923,214,297.98
  5. Step 5: Solve for x
    x = 10,923,214,297.98/103,542.76
  6. Step 6: Final answer
    x = 105,494.72

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1.5x scale

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.