Home / 128,748.18-193,056.39-53,847.84

Finding the Fourth Proportional to 128,748.18, 193,056.39 and 53,847.84

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Solution

The fourth proportional to 128,748.18, 193,056.39 and 53,847.84 is: 80,744.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,748.18 : 193,056.39 = 53,847.84 : x
  2. Step 2: Convert to fraction form
    128,748.18/193,056.39 = 53,847.84/x
  3. Step 3: Cross multiply
    128,748.18x = 193,056.39 × 53,847.84
  4. Step 4: Simplify right side
    128,748.18x = 10,395,669,599.70
  5. Step 5: Solve for x
    x = 10,395,669,599.70/128,748.18
  6. Step 6: Final answer
    x = 80,744.21

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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.