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Finding the Fourth Proportional to 99,780.30, 149,889.15 and 73,652.94

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Solution

The fourth proportional to 99,780.30, 149,889.15 and 73,652.94 is: 110,640.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,780.30 : 149,889.15 = 73,652.94 : x
  2. Step 2: Convert to fraction form
    99,780.30/149,889.15 = 73,652.94/x
  3. Step 3: Cross multiply
    99,780.30x = 149,889.15 × 73,652.94
  4. Step 4: Simplify right side
    99,780.30x = 11,039,776,571.60
  5. Step 5: Solve for x
    x = 11,039,776,571.60/99,780.30
  6. Step 6: Final answer
    x = 110,640.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.