Home / 89,966.09-134,221.72-80,998.58

Finding the Fourth Proportional to 89,966.09, 134,221.72 and 80,998.58

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Solution

The fourth proportional to 89,966.09, 134,221.72 and 80,998.58 is: 120,842.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,966.09 : 134,221.72 = 80,998.58 : x
  2. Step 2: Convert to fraction form
    89,966.09/134,221.72 = 80,998.58/x
  3. Step 3: Cross multiply
    89,966.09x = 134,221.72 × 80,998.58
  4. Step 4: Simplify right side
    89,966.09x = 10,871,768,320.16
  5. Step 5: Solve for x
    x = 10,871,768,320.16/89,966.09
  6. Step 6: Final answer
    x = 120,842.96

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.