Home / 127,678.40-191,517.68-61,102.88

Finding the Fourth Proportional to 127,678.40, 191,517.68 and 61,102.88

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Solution

The fourth proportional to 127,678.40, 191,517.68 and 61,102.88 is: 91,654.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,678.40 : 191,517.68 = 61,102.88 : x
  2. Step 2: Convert to fraction form
    127,678.40/191,517.68 = 61,102.88/x
  3. Step 3: Cross multiply
    127,678.40x = 191,517.68 × 61,102.88
  4. Step 4: Simplify right side
    127,678.40x = 11,702,281,818.92
  5. Step 5: Solve for x
    x = 11,702,281,818.92/127,678.40
  6. Step 6: Final answer
    x = 91,654.36

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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.