Home / 151,710.41-209,358.44-87,178.88

Finding the Fourth Proportional to 151,710.41, 209,358.44 and 87,178.88

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Solution

The fourth proportional to 151,710.41, 209,358.44 and 87,178.88 is: 120,305.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,710.41 : 209,358.44 = 87,178.88 : x
  2. Step 2: Convert to fraction form
    151,710.41/209,358.44 = 87,178.88/x
  3. Step 3: Cross multiply
    151,710.41x = 209,358.44 × 87,178.88
  4. Step 4: Simplify right side
    151,710.41x = 18,251,633,270.96
  5. Step 5: Solve for x
    x = 18,251,633,270.96/151,710.41
  6. Step 6: Final answer
    x = 120,305.74

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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.