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Finding the Fourth Proportional to 127,967.80, 192,009.30 and 61,382.20

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Solution

The fourth proportional to 127,967.80, 192,009.30 and 61,382.20 is: 92,100.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,967.80 : 192,009.30 = 61,382.20 : x
  2. Step 2: Convert to fraction form
    127,967.80/192,009.30 = 61,382.20/x
  3. Step 3: Cross multiply
    127,967.80x = 192,009.30 × 61,382.20
  4. Step 4: Simplify right side
    127,967.80x = 11,785,953,254.46
  5. Step 5: Solve for x
    x = 11,785,953,254.46/127,967.80
  6. Step 6: Final answer
    x = 92,100.93

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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.