Home / 100,699.57-151,090.40-64,716.33

Finding the Fourth Proportional to 100,699.57, 151,090.40 and 64,716.33

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Solution

The fourth proportional to 100,699.57, 151,090.40 and 64,716.33 is: 97,100.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,699.57 : 151,090.40 = 64,716.33 : x
  2. Step 2: Convert to fraction form
    100,699.57/151,090.40 = 64,716.33/x
  3. Step 3: Cross multiply
    100,699.57x = 151,090.40 × 64,716.33
  4. Step 4: Simplify right side
    100,699.57x = 9,778,016,348.02
  5. Step 5: Solve for x
    x = 9,778,016,348.02/100,699.57
  6. Step 6: Final answer
    x = 97,100.88

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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.