Home / 112,219.50-154,866.15-61,921.74

Finding the Fourth Proportional to 112,219.50, 154,866.15 and 61,921.74

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Solution

The fourth proportional to 112,219.50, 154,866.15 and 61,921.74 is: 85,453.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,219.50 : 154,866.15 = 61,921.74 : x
  2. Step 2: Convert to fraction form
    112,219.50/154,866.15 = 61,921.74/x
  3. Step 3: Cross multiply
    112,219.50x = 154,866.15 × 61,921.74
  4. Step 4: Simplify right side
    112,219.50x = 9,589,581,475.10
  5. Step 5: Solve for x
    x = 9,589,581,475.10/112,219.50
  6. Step 6: Final answer
    x = 85,453.79

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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.