Home / 158,717.91-219,037.04-87,100.50

Finding the Fourth Proportional to 158,717.91, 219,037.04 and 87,100.50

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Solution

The fourth proportional to 158,717.91, 219,037.04 and 87,100.50 is: 120,202.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,717.91 : 219,037.04 = 87,100.50 : x
  2. Step 2: Convert to fraction form
    158,717.91/219,037.04 = 87,100.50/x
  3. Step 3: Cross multiply
    158,717.91x = 219,037.04 × 87,100.50
  4. Step 4: Simplify right side
    158,717.91x = 19,078,234,937.98
  5. Step 5: Solve for x
    x = 19,078,234,937.98/158,717.91
  6. Step 6: Final answer
    x = 120,202.15

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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.