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Finding the Fourth Proportional to 127,247.76, 175,483.80 and 81,845.64

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Solution

The fourth proportional to 127,247.76, 175,483.80 and 81,845.64 is: 112,871.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,247.76 : 175,483.80 = 81,845.64 : x
  2. Step 2: Convert to fraction form
    127,247.76/175,483.80 = 81,845.64/x
  3. Step 3: Cross multiply
    127,247.76x = 175,483.80 × 81,845.64
  4. Step 4: Simplify right side
    127,247.76x = 14,362,583,920.63
  5. Step 5: Solve for x
    x = 14,362,583,920.63/127,247.76
  6. Step 6: Final answer
    x = 112,871.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.