Home / 102,039.96-140,819.92-56,718.70

Finding the Fourth Proportional to 102,039.96, 140,819.92 and 56,718.70

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Solution

The fourth proportional to 102,039.96, 140,819.92 and 56,718.70 is: 78,274.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,039.96 : 140,819.92 = 56,718.70 : x
  2. Step 2: Convert to fraction form
    102,039.96/140,819.92 = 56,718.70/x
  3. Step 3: Cross multiply
    102,039.96x = 140,819.92 × 56,718.70
  4. Step 4: Simplify right side
    102,039.96x = 7,987,122,796.50
  5. Step 5: Solve for x
    x = 7,987,122,796.50/102,039.96
  6. Step 6: Final answer
    x = 78,274.46

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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.