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Finding the Fourth Proportional to 99,405.20, 149,010.60 and 88,907.60

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Solution

The fourth proportional to 99,405.20, 149,010.60 and 88,907.60 is: 133,274.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,405.20 : 149,010.60 = 88,907.60 : x
  2. Step 2: Convert to fraction form
    99,405.20/149,010.60 = 88,907.60/x
  3. Step 3: Cross multiply
    99,405.20x = 149,010.60 × 88,907.60
  4. Step 4: Simplify right side
    99,405.20x = 13,248,174,820.56
  5. Step 5: Solve for x
    x = 13,248,174,820.56/99,405.20
  6. Step 6: Final answer
    x = 133,274.46

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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.