Home / 151,007.28-208,359.40-87,321.84

Finding the Fourth Proportional to 151,007.28, 208,359.40 and 87,321.84

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Solution

The fourth proportional to 151,007.28, 208,359.40 and 87,321.84 is: 120,486.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,007.28 : 208,359.40 = 87,321.84 : x
  2. Step 2: Convert to fraction form
    151,007.28/208,359.40 = 87,321.84/x
  3. Step 3: Cross multiply
    151,007.28x = 208,359.40 × 87,321.84
  4. Step 4: Simplify right side
    151,007.28x = 18,194,326,189.30
  5. Step 5: Solve for x
    x = 18,194,326,189.30/151,007.28
  6. Step 6: Final answer
    x = 120,486.42

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1.5x scale

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.