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Finding the Fourth Proportional to 158,893.88, 219,273.75 and 87,275.30

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Solution

The fourth proportional to 158,893.88, 219,273.75 and 87,275.30 is: 120,440.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,893.88 : 219,273.75 = 87,275.30 : x
  2. Step 2: Convert to fraction form
    158,893.88/219,273.75 = 87,275.30/x
  3. Step 3: Cross multiply
    158,893.88x = 219,273.75 × 87,275.30
  4. Step 4: Simplify right side
    158,893.88x = 19,137,181,217.01
  5. Step 5: Solve for x
    x = 19,137,181,217.01/158,893.88
  6. Step 6: Final answer
    x = 120,440.02

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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.