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Finding the Fourth Proportional to 159,187.64, 219,679.46 and 87,573.11

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Solution

The fourth proportional to 159,187.64, 219,679.46 and 87,573.11 is: 120,851.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,187.64 : 219,679.46 = 87,573.11 : x
  2. Step 2: Convert to fraction form
    159,187.64/219,679.46 = 87,573.11/x
  3. Step 3: Cross multiply
    159,187.64x = 219,679.46 × 87,573.11
  4. Step 4: Simplify right side
    159,187.64x = 19,238,013,515.32
  5. Step 5: Solve for x
    x = 19,238,013,515.32/159,187.64
  6. Step 6: Final answer
    x = 120,851.18

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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.