Home / 151,189.13-208,628.87-87,531.03

Finding the Fourth Proportional to 151,189.13, 208,628.87 and 87,531.03

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Solution

The fourth proportional to 151,189.13, 208,628.87 and 87,531.03 is: 120,785.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,189.13 : 208,628.87 = 87,531.03 : x
  2. Step 2: Convert to fraction form
    151,189.13/208,628.87 = 87,531.03/x
  3. Step 3: Cross multiply
    151,189.13x = 208,628.87 × 87,531.03
  4. Step 4: Simplify right side
    151,189.13x = 18,261,499,441.18
  5. Step 5: Solve for x
    x = 18,261,499,441.18/151,189.13
  6. Step 6: Final answer
    x = 120,785.79

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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.