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Finding the Fourth Proportional to 127,232.60, 190,848.90 and 89,907.80

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Solution

The fourth proportional to 127,232.60, 190,848.90 and 89,907.80 is: 134,861.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,232.60 : 190,848.90 = 89,907.80 : x
  2. Step 2: Convert to fraction form
    127,232.60/190,848.90 = 89,907.80/x
  3. Step 3: Cross multiply
    127,232.60x = 190,848.90 × 89,907.80
  4. Step 4: Simplify right side
    127,232.60x = 17,158,804,731.42
  5. Step 5: Solve for x
    x = 17,158,804,731.42/127,232.60
  6. Step 6: Final answer
    x = 134,861.70

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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.