Home / 159,011.80-219,435.78-87,396.28

Finding the Fourth Proportional to 159,011.80, 219,435.78 and 87,396.28

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Solution

The fourth proportional to 159,011.80, 219,435.78 and 87,396.28 is: 120,606.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,011.80 : 219,435.78 = 87,396.28 : x
  2. Step 2: Convert to fraction form
    159,011.80/219,435.78 = 87,396.28/x
  3. Step 3: Cross multiply
    159,011.80x = 219,435.78 × 87,396.28
  4. Step 4: Simplify right side
    159,011.80x = 19,177,870,870.90
  5. Step 5: Solve for x
    x = 19,177,870,870.90/159,011.80
  6. Step 6: Final answer
    x = 120,606.59

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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.