Home / 128,986.40-193,586.24-65,853.20

Finding the Fourth Proportional to 128,986.40, 193,586.24 and 65,853.20

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Solution

The fourth proportional to 128,986.40, 193,586.24 and 65,853.20 is: 98,834.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,986.40 : 193,586.24 = 65,853.20 : x
  2. Step 2: Convert to fraction form
    128,986.40/193,586.24 = 65,853.20/x
  3. Step 3: Cross multiply
    128,986.40x = 193,586.24 × 65,853.20
  4. Step 4: Simplify right side
    128,986.40x = 12,748,273,379.97
  5. Step 5: Solve for x
    x = 12,748,273,379.97/128,986.40
  6. Step 6: Final answer
    x = 98,834.24

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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.