Home / 185,139.79-255,317.40-127,687.30

Finding the Fourth Proportional to 185,139.79, 255,317.40 and 127,687.30

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Solution

The fourth proportional to 185,139.79, 255,317.40 and 127,687.30 is: 176,087.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,139.79 : 255,317.40 = 127,687.30 : x
  2. Step 2: Convert to fraction form
    185,139.79/255,317.40 = 127,687.30/x
  3. Step 3: Cross multiply
    185,139.79x = 255,317.40 × 127,687.30
  4. Step 4: Simplify right side
    185,139.79x = 32,600,788,810.73
  5. Step 5: Solve for x
    x = 32,600,788,810.73/185,139.79
  6. Step 6: Final answer
    x = 176,087.43

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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.