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Finding the Fourth Proportional to 159,175.07, 219,657 and 87,555.09

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Solution

The fourth proportional to 159,175.07, 219,657 and 87,555.09 is: 120,823.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,175.07 : 219,657 = 87,555.09 : x
  2. Step 2: Convert to fraction form
    159,175.07/219,657 = 87,555.09/x
  3. Step 3: Cross multiply
    159,175.07x = 219,657 × 87,555.09
  4. Step 4: Simplify right side
    159,175.07x = 19,232,088,404.13
  5. Step 5: Solve for x
    x = 19,232,088,404.13/159,175.07
  6. Step 6: Final answer
    x = 120,823.50

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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.