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Finding the Fourth Proportional to 127,252.80, 190,830.60 and 38,476.80

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Solution

The fourth proportional to 127,252.80, 190,830.60 and 38,476.80 is: 57,700.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,252.80 : 190,830.60 = 38,476.80 : x
  2. Step 2: Convert to fraction form
    127,252.80/190,830.60 = 38,476.80/x
  3. Step 3: Cross multiply
    127,252.80x = 190,830.60 × 38,476.80
  4. Step 4: Simplify right side
    127,252.80x = 7,342,550,830.08
  5. Step 5: Solve for x
    x = 7,342,550,830.08/127,252.80
  6. Step 6: Final answer
    x = 57,700.51

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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.