Home / 99,467.40-149,201.10-69,918.60

Finding the Fourth Proportional to 99,467.40, 149,201.10 and 69,918.60

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Solution

The fourth proportional to 99,467.40, 149,201.10 and 69,918.60 is: 104,877.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,467.40 : 149,201.10 = 69,918.60 : x
  2. Step 2: Convert to fraction form
    99,467.40/149,201.10 = 69,918.60/x
  3. Step 3: Cross multiply
    99,467.40x = 149,201.10 × 69,918.60
  4. Step 4: Simplify right side
    99,467.40x = 10,431,932,030.46
  5. Step 5: Solve for x
    x = 10,431,932,030.46/99,467.40
  6. Step 6: Final answer
    x = 104,877.90

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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.