Home / 98,687.06-136,187.91-55,666.41

Finding the Fourth Proportional to 98,687.06, 136,187.91 and 55,666.41

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Solution

The fourth proportional to 98,687.06, 136,187.91 and 55,666.41 is: 76,819.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,687.06 : 136,187.91 = 55,666.41 : x
  2. Step 2: Convert to fraction form
    98,687.06/136,187.91 = 55,666.41/x
  3. Step 3: Cross multiply
    98,687.06x = 136,187.91 × 55,666.41
  4. Step 4: Simplify right side
    98,687.06x = 7,581,092,035.10
  5. Step 5: Solve for x
    x = 7,581,092,035.10/98,687.06
  6. Step 6: Final answer
    x = 76,819.51

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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.