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Finding the Fourth Proportional to 98,380.82, 146,803.91 and 87,777.95

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Solution

The fourth proportional to 98,380.82, 146,803.91 and 87,777.95 is: 130,982.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,380.82 : 146,803.91 = 87,777.95 : x
  2. Step 2: Convert to fraction form
    98,380.82/146,803.91 = 87,777.95/x
  3. Step 3: Cross multiply
    98,380.82x = 146,803.91 × 87,777.95
  4. Step 4: Simplify right side
    98,380.82x = 12,886,145,098.88
  5. Step 5: Solve for x
    x = 12,886,145,098.88/98,380.82
  6. Step 6: Final answer
    x = 130,982.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.