Home / 158,769.20-219,103.98-87,155.76

Finding the Fourth Proportional to 158,769.20, 219,103.98 and 87,155.76

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Solution

The fourth proportional to 158,769.20, 219,103.98 and 87,155.76 is: 120,276.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,769.20 : 219,103.98 = 87,155.76 : x
  2. Step 2: Convert to fraction form
    158,769.20/219,103.98 = 87,155.76/x
  3. Step 3: Cross multiply
    158,769.20x = 219,103.98 × 87,155.76
  4. Step 4: Simplify right side
    158,769.20x = 19,096,173,895.92
  5. Step 5: Solve for x
    x = 19,096,173,895.92/158,769.20
  6. Step 6: Final answer
    x = 120,276.31

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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.