Home / 127,428.20-191,180.70-90,564.20

Finding the Fourth Proportional to 127,428.20, 191,180.70 and 90,564.20

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Solution

The fourth proportional to 127,428.20, 191,180.70 and 90,564.20 is: 135,873.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,428.20 : 191,180.70 = 90,564.20 : x
  2. Step 2: Convert to fraction form
    127,428.20/191,180.70 = 90,564.20/x
  3. Step 3: Cross multiply
    127,428.20x = 191,180.70 × 90,564.20
  4. Step 4: Simplify right side
    127,428.20x = 17,314,127,150.94
  5. Step 5: Solve for x
    x = 17,314,127,150.94/127,428.20
  6. Step 6: Final answer
    x = 135,873.59

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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.