Home / 133,054.89-183,615.72-90,687.42

Finding the Fourth Proportional to 133,054.89, 183,615.72 and 90,687.42

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Solution

The fourth proportional to 133,054.89, 183,615.72 and 90,687.42 is: 125,148.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,054.89 : 183,615.72 = 90,687.42 : x
  2. Step 2: Convert to fraction form
    133,054.89/183,615.72 = 90,687.42/x
  3. Step 3: Cross multiply
    133,054.89x = 183,615.72 × 90,687.42
  4. Step 4: Simplify right side
    133,054.89x = 16,651,635,918.24
  5. Step 5: Solve for x
    x = 16,651,635,918.24/133,054.89
  6. Step 6: Final answer
    x = 125,148.62

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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.