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Finding the Fourth Proportional to 113,437.66, 156,611.36 and 100,826.37

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Solution

The fourth proportional to 113,437.66, 156,611.36 and 100,826.37 is: 139,200.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,437.66 : 156,611.36 = 100,826.37 : x
  2. Step 2: Convert to fraction form
    113,437.66/156,611.36 = 100,826.37/x
  3. Step 3: Cross multiply
    113,437.66x = 156,611.36 × 100,826.37
  4. Step 4: Simplify right side
    113,437.66x = 15,790,554,929.56
  5. Step 5: Solve for x
    x = 15,790,554,929.56/113,437.66
  6. Step 6: Final answer
    x = 139,200.29

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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.