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Finding the Fourth Proportional to 159,071.88, 219,519.72 and 87,453.12

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Solution

The fourth proportional to 159,071.88, 219,519.72 and 87,453.12 is: 120,685.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,071.88 : 219,519.72 = 87,453.12 : x
  2. Step 2: Convert to fraction form
    159,071.88/219,519.72 = 87,453.12/x
  3. Step 3: Cross multiply
    159,071.88x = 219,519.72 × 87,453.12
  4. Step 4: Simplify right side
    159,071.88x = 19,197,684,415.53
  5. Step 5: Solve for x
    x = 19,197,684,415.53/159,071.88
  6. Step 6: Final answer
    x = 120,685.59

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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.