Home / 186,513.40-279,737.70-68,123.80

Finding the Fourth Proportional to 186,513.40, 279,737.70 and 68,123.80

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Solution

The fourth proportional to 186,513.40, 279,737.70 and 68,123.80 is: 102,173.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,513.40 : 279,737.70 = 68,123.80 : x
  2. Step 2: Convert to fraction form
    186,513.40/279,737.70 = 68,123.80/x
  3. Step 3: Cross multiply
    186,513.40x = 279,737.70 × 68,123.80
  4. Step 4: Simplify right side
    186,513.40x = 19,056,795,127.26
  5. Step 5: Solve for x
    x = 19,056,795,127.26/186,513.40
  6. Step 6: Final answer
    x = 102,173.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.