Home / 186,140.49-256,815.92-105,561.69

Finding the Fourth Proportional to 186,140.49, 256,815.92 and 105,561.69

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Solution

The fourth proportional to 186,140.49, 256,815.92 and 105,561.69 is: 145,642.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,140.49 : 256,815.92 = 105,561.69 : x
  2. Step 2: Convert to fraction form
    186,140.49/256,815.92 = 105,561.69/x
  3. Step 3: Cross multiply
    186,140.49x = 256,815.92 × 105,561.69
  4. Step 4: Simplify right side
    186,140.49x = 27,109,922,006.30
  5. Step 5: Solve for x
    x = 27,109,922,006.30/186,140.49
  6. Step 6: Final answer
    x = 145,642.26

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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.