Home / 127,155.65-190,762.56-55,120.64

Finding the Fourth Proportional to 127,155.65, 190,762.56 and 55,120.64

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Solution

The fourth proportional to 127,155.65, 190,762.56 and 55,120.64 is: 82,693.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,155.65 : 190,762.56 = 55,120.64 : x
  2. Step 2: Convert to fraction form
    127,155.65/190,762.56 = 55,120.64/x
  3. Step 3: Cross multiply
    127,155.65x = 190,762.56 × 55,120.64
  4. Step 4: Simplify right side
    127,155.65x = 10,514,953,441.43
  5. Step 5: Solve for x
    x = 10,514,953,441.43/127,155.65
  6. Step 6: Final answer
    x = 82,693.56

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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.