Home / 112,126.37-154,732.41-61,139.50

Finding the Fourth Proportional to 112,126.37, 154,732.41 and 61,139.50

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Solution

The fourth proportional to 112,126.37, 154,732.41 and 61,139.50 is: 84,371.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,126.37 : 154,732.41 = 61,139.50 : x
  2. Step 2: Convert to fraction form
    112,126.37/154,732.41 = 61,139.50/x
  3. Step 3: Cross multiply
    112,126.37x = 154,732.41 × 61,139.50
  4. Step 4: Simplify right side
    112,126.37x = 9,460,262,181.20
  5. Step 5: Solve for x
    x = 9,460,262,181.20/112,126.37
  6. Step 6: Final answer
    x = 84,371.43

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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.