Home / 159,131.30-219,596.81-87,511.32

Finding the Fourth Proportional to 159,131.30, 219,596.81 and 87,511.32

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Solution

The fourth proportional to 159,131.30, 219,596.81 and 87,511.32 is: 120,763.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,131.30 : 219,596.81 = 87,511.32 : x
  2. Step 2: Convert to fraction form
    159,131.30/219,596.81 = 87,511.32/x
  3. Step 3: Cross multiply
    159,131.30x = 219,596.81 × 87,511.32
  4. Step 4: Simplify right side
    159,131.30x = 19,217,205,970.99
  5. Step 5: Solve for x
    x = 19,217,205,970.99/159,131.30
  6. Step 6: Final answer
    x = 120,763.21

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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.