Home / 128,923.79-193,385.09-40,177.35

Finding the Fourth Proportional to 128,923.79, 193,385.09 and 40,177.35

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Solution

The fourth proportional to 128,923.79, 193,385.09 and 40,177.35 is: 60,265.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,923.79 : 193,385.09 = 40,177.35 : x
  2. Step 2: Convert to fraction form
    128,923.79/193,385.09 = 40,177.35/x
  3. Step 3: Cross multiply
    128,923.79x = 193,385.09 × 40,177.35
  4. Step 4: Simplify right side
    128,923.79x = 7,769,700,244.82
  5. Step 5: Solve for x
    x = 7,769,700,244.82/128,923.79
  6. Step 6: Final answer
    x = 60,265.84

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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.