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Finding the Fourth Proportional to 127,079.47, 190,502.37 and 54,987.37

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Solution

The fourth proportional to 127,079.47, 190,502.37 and 54,987.37 is: 82,430.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,079.47 : 190,502.37 = 54,987.37 : x
  2. Step 2: Convert to fraction form
    127,079.47/190,502.37 = 54,987.37/x
  3. Step 3: Cross multiply
    127,079.47x = 190,502.37 × 54,987.37
  4. Step 4: Simplify right side
    127,079.47x = 10,475,224,251.36
  5. Step 5: Solve for x
    x = 10,475,224,251.36/127,079.47
  6. Step 6: Final answer
    x = 82,430.50

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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.