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Finding the Fourth Proportional to 107,548.80, 161,128.80 and 91,996.80

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Solution

The fourth proportional to 107,548.80, 161,128.80 and 91,996.80 is: 137,828.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,548.80 : 161,128.80 = 91,996.80 : x
  2. Step 2: Convert to fraction form
    107,548.80/161,128.80 = 91,996.80/x
  3. Step 3: Cross multiply
    107,548.80x = 161,128.80 × 91,996.80
  4. Step 4: Simplify right side
    107,548.80x = 14,823,333,987.84
  5. Step 5: Solve for x
    x = 14,823,333,987.84/107,548.80
  6. Step 6: Final answer
    x = 137,828.91

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1.5x scale

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.