Home / 127,934.80-191,652.78-77,890.78

Finding the Fourth Proportional to 127,934.80, 191,652.78 and 77,890.78

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Solution

The fourth proportional to 127,934.80, 191,652.78 and 77,890.78 is: 116,684.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,934.80 : 191,652.78 = 77,890.78 : x
  2. Step 2: Convert to fraction form
    127,934.80/191,652.78 = 77,890.78/x
  3. Step 3: Cross multiply
    127,934.80x = 191,652.78 × 77,890.78
  4. Step 4: Simplify right side
    127,934.80x = 14,927,984,523.37
  5. Step 5: Solve for x
    x = 14,927,984,523.37/127,934.80
  6. Step 6: Final answer
    x = 116,684.32

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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.