Home / 127,631.20-191,446.80-57,647.20

Finding the Fourth Proportional to 127,631.20, 191,446.80 and 57,647.20

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Solution

The fourth proportional to 127,631.20, 191,446.80 and 57,647.20 is: 86,470.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,631.20 : 191,446.80 = 57,647.20 : x
  2. Step 2: Convert to fraction form
    127,631.20/191,446.80 = 57,647.20/x
  3. Step 3: Cross multiply
    127,631.20x = 191,446.80 × 57,647.20
  4. Step 4: Simplify right side
    127,631.20x = 11,036,371,968.96
  5. Step 5: Solve for x
    x = 11,036,371,968.96/127,631.20
  6. Step 6: Final answer
    x = 86,470.80

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1.5x scale

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.