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Finding the Fourth Proportional to 127,320.40, 190,980.60 and 73,957.60

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Solution

The fourth proportional to 127,320.40, 190,980.60 and 73,957.60 is: 110,936.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,320.40 : 190,980.60 = 73,957.60 : x
  2. Step 2: Convert to fraction form
    127,320.40/190,980.60 = 73,957.60/x
  3. Step 3: Cross multiply
    127,320.40x = 190,980.60 × 73,957.60
  4. Step 4: Simplify right side
    127,320.40x = 14,124,466,822.56
  5. Step 5: Solve for x
    x = 14,124,466,822.56/127,320.40
  6. Step 6: Final answer
    x = 110,936.40

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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.