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Finding the Fourth Proportional to 159,580.80, 220,205.28 and 91,581.51

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Solution

The fourth proportional to 159,580.80, 220,205.28 and 91,581.51 is: 126,373.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,580.80 : 220,205.28 = 91,581.51 : x
  2. Step 2: Convert to fraction form
    159,580.80/220,205.28 = 91,581.51/x
  3. Step 3: Cross multiply
    159,580.80x = 220,205.28 × 91,581.51
  4. Step 4: Simplify right side
    159,580.80x = 20,166,732,052.37
  5. Step 5: Solve for x
    x = 20,166,732,052.37/159,580.80
  6. Step 6: Final answer
    x = 126,373.17

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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.