Home / 127,928.10-191,890.35-57,807.30

Finding the Fourth Proportional to 127,928.10, 191,890.35 and 57,807.30

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Solution

The fourth proportional to 127,928.10, 191,890.35 and 57,807.30 is: 86,710.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,928.10 : 191,890.35 = 57,807.30 : x
  2. Step 2: Convert to fraction form
    127,928.10/191,890.35 = 57,807.30/x
  3. Step 3: Cross multiply
    127,928.10x = 191,890.35 × 57,807.30
  4. Step 4: Simplify right side
    127,928.10x = 11,092,663,029.56
  5. Step 5: Solve for x
    x = 11,092,663,029.56/127,928.10
  6. Step 6: Final answer
    x = 86,710.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.