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Finding the Fourth Proportional to 127,389.86, 191,084.87 and 125,295.51

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Solution

The fourth proportional to 127,389.86, 191,084.87 and 125,295.51 is: 187,943.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,389.86 : 191,084.87 = 125,295.51 : x
  2. Step 2: Convert to fraction form
    127,389.86/191,084.87 = 125,295.51/x
  3. Step 3: Cross multiply
    127,389.86x = 191,084.87 × 125,295.51
  4. Step 4: Simplify right side
    127,389.86x = 23,942,076,194.89
  5. Step 5: Solve for x
    x = 23,942,076,194.89/127,389.86
  6. Step 6: Final answer
    x = 187,943.34

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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.