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Finding the Fourth Proportional to 127,232.80, 190,695.60 and 64,871.20

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Solution

The fourth proportional to 127,232.80, 190,695.60 and 64,871.20 is: 97,228.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,232.80 : 190,695.60 = 64,871.20 : x
  2. Step 2: Convert to fraction form
    127,232.80/190,695.60 = 64,871.20/x
  3. Step 3: Cross multiply
    127,232.80x = 190,695.60 × 64,871.20
  4. Step 4: Simplify right side
    127,232.80x = 12,370,652,406.72
  5. Step 5: Solve for x
    x = 12,370,652,406.72/127,232.80
  6. Step 6: Final answer
    x = 97,228.49

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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.