Home / 186,321.18-257,101.78-105,732.66

Finding the Fourth Proportional to 186,321.18, 257,101.78 and 105,732.66

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Solution

The fourth proportional to 186,321.18, 257,101.78 and 105,732.66 is: 145,898.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,321.18 : 257,101.78 = 105,732.66 : x
  2. Step 2: Convert to fraction form
    186,321.18/257,101.78 = 105,732.66/x
  3. Step 3: Cross multiply
    186,321.18x = 257,101.78 × 105,732.66
  4. Step 4: Simplify right side
    186,321.18x = 27,184,055,090.13
  5. Step 5: Solve for x
    x = 27,184,055,090.13/186,321.18
  6. Step 6: Final answer
    x = 145,898.90

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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.