Home / 137,537.70-189,801.87-77,108.36

Finding the Fourth Proportional to 137,537.70, 189,801.87 and 77,108.36

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Solution

The fourth proportional to 137,537.70, 189,801.87 and 77,108.36 is: 106,409.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,537.70 : 189,801.87 = 77,108.36 : x
  2. Step 2: Convert to fraction form
    137,537.70/189,801.87 = 77,108.36/x
  3. Step 3: Cross multiply
    137,537.70x = 189,801.87 × 77,108.36
  4. Step 4: Simplify right side
    137,537.70x = 14,635,309,682.47
  5. Step 5: Solve for x
    x = 14,635,309,682.47/137,537.70
  6. Step 6: Final answer
    x = 106,409.44

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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.