Home / 186,599.90-257,362.21-129,260.86

Finding the Fourth Proportional to 186,599.90, 257,362.21 and 129,260.86

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Solution

The fourth proportional to 186,599.90, 257,362.21 and 129,260.86 is: 178,279.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,599.90 : 257,362.21 = 129,260.86 : x
  2. Step 2: Convert to fraction form
    186,599.90/257,362.21 = 129,260.86/x
  3. Step 3: Cross multiply
    186,599.90x = 257,362.21 × 129,260.86
  4. Step 4: Simplify right side
    186,599.90x = 33,266,861,561.93
  5. Step 5: Solve for x
    x = 33,266,861,561.93/186,599.90
  6. Step 6: Final answer
    x = 178,279.09

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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.