Home / 186,311.68-257,066.40-105,720.96

Finding the Fourth Proportional to 186,311.68, 257,066.40 and 105,720.96

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Solution

The fourth proportional to 186,311.68, 257,066.40 and 105,720.96 is: 145,870.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,311.68 : 257,066.40 = 105,720.96 : x
  2. Step 2: Convert to fraction form
    186,311.68/257,066.40 = 105,720.96/x
  3. Step 3: Cross multiply
    186,311.68x = 257,066.40 × 105,720.96
  4. Step 4: Simplify right side
    186,311.68x = 27,177,306,591.74
  5. Step 5: Solve for x
    x = 27,177,306,591.74/186,311.68
  6. Step 6: Final answer
    x = 145,870.12

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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.