Home / 151,564.30-209,158.64-87,037.75

Finding the Fourth Proportional to 151,564.30, 209,158.64 and 87,037.75

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Solution

The fourth proportional to 151,564.30, 209,158.64 and 87,037.75 is: 120,112.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,564.30 : 209,158.64 = 87,037.75 : x
  2. Step 2: Convert to fraction form
    151,564.30/209,158.64 = 87,037.75/x
  3. Step 3: Cross multiply
    151,564.30x = 209,158.64 × 87,037.75
  4. Step 4: Simplify right side
    151,564.30x = 18,204,697,571.31
  5. Step 5: Solve for x
    x = 18,204,697,571.31/151,564.30
  6. Step 6: Final answer
    x = 120,112.04

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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.