Home / 128,877.24-193,218.66-84,515.16

Finding the Fourth Proportional to 128,877.24, 193,218.66 and 84,515.16

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Solution

The fourth proportional to 128,877.24, 193,218.66 and 84,515.16 is: 126,709.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,877.24 : 193,218.66 = 84,515.16 : x
  2. Step 2: Convert to fraction form
    128,877.24/193,218.66 = 84,515.16/x
  3. Step 3: Cross multiply
    128,877.24x = 193,218.66 × 84,515.16
  4. Step 4: Simplify right side
    128,877.24x = 16,329,905,964.89
  5. Step 5: Solve for x
    x = 16,329,905,964.89/128,877.24
  6. Step 6: Final answer
    x = 126,709.00

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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.