Home / 127,621.20-191,431.80-57,637.20

Finding the Fourth Proportional to 127,621.20, 191,431.80 and 57,637.20

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Solution

The fourth proportional to 127,621.20, 191,431.80 and 57,637.20 is: 86,455.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,621.20 : 191,431.80 = 57,637.20 : x
  2. Step 2: Convert to fraction form
    127,621.20/191,431.80 = 57,637.20/x
  3. Step 3: Cross multiply
    127,621.20x = 191,431.80 × 57,637.20
  4. Step 4: Simplify right side
    127,621.20x = 11,033,592,942.96
  5. Step 5: Solve for x
    x = 11,033,592,942.96/127,621.20
  6. Step 6: Final answer
    x = 86,455.80

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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.