Home / 102,542.93-141,471.86-63,778.20

Finding the Fourth Proportional to 102,542.93, 141,471.86 and 63,778.20

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Solution

The fourth proportional to 102,542.93, 141,471.86 and 63,778.20 is: 87,990.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,542.93 : 141,471.86 = 63,778.20 : x
  2. Step 2: Convert to fraction form
    102,542.93/141,471.86 = 63,778.20/x
  3. Step 3: Cross multiply
    102,542.93x = 141,471.86 × 63,778.20
  4. Step 4: Simplify right side
    102,542.93x = 9,022,820,262.56
  5. Step 5: Solve for x
    x = 9,022,820,262.56/102,542.93
  6. Step 6: Final answer
    x = 87,990.67

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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.