Home / 245,485.29-338,764.38-142,123.85

Finding the Fourth Proportional to 245,485.29, 338,764.38 and 142,123.85

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Solution

The fourth proportional to 245,485.29, 338,764.38 and 142,123.85 is: 196,127.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,485.29 : 338,764.38 = 142,123.85 : x
  2. Step 2: Convert to fraction form
    245,485.29/338,764.38 = 142,123.85/x
  3. Step 3: Cross multiply
    245,485.29x = 338,764.38 × 142,123.85
  4. Step 4: Simplify right side
    245,485.29x = 48,146,497,928.46
  5. Step 5: Solve for x
    x = 48,146,497,928.46/245,485.29
  6. Step 6: Final answer
    x = 196,127.83

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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.