Home / 186,123.30-256,828.77-105,534.78

Finding the Fourth Proportional to 186,123.30, 256,828.77 and 105,534.78

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Solution

The fourth proportional to 186,123.30, 256,828.77 and 105,534.78 is: 145,625.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,123.30 : 256,828.77 = 105,534.78 : x
  2. Step 2: Convert to fraction form
    186,123.30/256,828.77 = 105,534.78/x
  3. Step 3: Cross multiply
    186,123.30x = 256,828.77 × 105,534.78
  4. Step 4: Simplify right side
    186,123.30x = 27,104,367,739.62
  5. Step 5: Solve for x
    x = 27,104,367,739.62/186,123.30
  6. Step 6: Final answer
    x = 145,625.87

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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.