Home / 128,776.80-193,383.90-95,534.40

Finding the Fourth Proportional to 128,776.80, 193,383.90 and 95,534.40

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Solution

The fourth proportional to 128,776.80, 193,383.90 and 95,534.40 is: 143,463.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,776.80 : 193,383.90 = 95,534.40 : x
  2. Step 2: Convert to fraction form
    128,776.80/193,383.90 = 95,534.40/x
  3. Step 3: Cross multiply
    128,776.80x = 193,383.90 × 95,534.40
  4. Step 4: Simplify right side
    128,776.80x = 18,474,814,856.16
  5. Step 5: Solve for x
    x = 18,474,814,856.16/128,776.80
  6. Step 6: Final answer
    x = 143,463.84

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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.