Home / 102,121.12-140,926.34-56,179.76

Finding the Fourth Proportional to 102,121.12, 140,926.34 and 56,179.76

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Solution

The fourth proportional to 102,121.12, 140,926.34 and 56,179.76 is: 77,527.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,121.12 : 140,926.34 = 56,179.76 : x
  2. Step 2: Convert to fraction form
    102,121.12/140,926.34 = 56,179.76/x
  3. Step 3: Cross multiply
    102,121.12x = 140,926.34 × 56,179.76
  4. Step 4: Simplify right side
    102,121.12x = 7,917,207,958.88
  5. Step 5: Solve for x
    x = 7,917,207,958.88/102,121.12
  6. Step 6: Final answer
    x = 77,527.63

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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.