Home / 99,143.09-136,766.78-63,295.43

Finding the Fourth Proportional to 99,143.09, 136,766.78 and 63,295.43

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Solution

The fourth proportional to 99,143.09, 136,766.78 and 63,295.43 is: 87,315.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,143.09 : 136,766.78 = 63,295.43 : x
  2. Step 2: Convert to fraction form
    99,143.09/136,766.78 = 63,295.43/x
  3. Step 3: Cross multiply
    99,143.09x = 136,766.78 × 63,295.43
  4. Step 4: Simplify right side
    99,143.09x = 8,656,711,386.86
  5. Step 5: Solve for x
    x = 8,656,711,386.86/99,143.09
  6. Step 6: Final answer
    x = 87,315.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.