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Finding the Fourth Proportional to 159,175.57, 219,657.69 and 87,555.59

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Solution

The fourth proportional to 159,175.57, 219,657.69 and 87,555.59 is: 120,824.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,175.57 : 219,657.69 = 87,555.59 : x
  2. Step 2: Convert to fraction form
    159,175.57/219,657.69 = 87,555.59/x
  3. Step 3: Cross multiply
    159,175.57x = 219,657.69 × 87,555.59
  4. Step 4: Simplify right side
    159,175.57x = 19,232,258,645.99
  5. Step 5: Solve for x
    x = 19,232,258,645.99/159,175.57
  6. Step 6: Final answer
    x = 120,824.19

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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.