Home / 127,020.76-190,532.64-87,567.28

Finding the Fourth Proportional to 127,020.76, 190,532.64 and 87,567.28

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Solution

The fourth proportional to 127,020.76, 190,532.64 and 87,567.28 is: 131,351.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,020.76 : 190,532.64 = 87,567.28 : x
  2. Step 2: Convert to fraction form
    127,020.76/190,532.64 = 87,567.28/x
  3. Step 3: Cross multiply
    127,020.76x = 190,532.64 × 87,567.28
  4. Step 4: Simplify right side
    127,020.76x = 16,684,425,036.02
  5. Step 5: Solve for x
    x = 16,684,425,036.02/127,020.76
  6. Step 6: Final answer
    x = 131,351.95

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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.