Home / 143,511.32-215,129.28-68,611.44

Finding the Fourth Proportional to 143,511.32, 215,129.28 and 68,611.44

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Solution

The fourth proportional to 143,511.32, 215,129.28 and 68,611.44 is: 102,851.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,511.32 : 215,129.28 = 68,611.44 : x
  2. Step 2: Convert to fraction form
    143,511.32/215,129.28 = 68,611.44/x
  3. Step 3: Cross multiply
    143,511.32x = 215,129.28 × 68,611.44
  4. Step 4: Simplify right side
    143,511.32x = 14,760,329,686.96
  5. Step 5: Solve for x
    x = 14,760,329,686.96/143,511.32
  6. Step 6: Final answer
    x = 102,851.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.