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Finding the Fourth Proportional to 101,289.69, 151,888.37 and 42,090.03

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Solution

The fourth proportional to 101,289.69, 151,888.37 and 42,090.03 is: 63,115.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,289.69 : 151,888.37 = 42,090.03 : x
  2. Step 2: Convert to fraction form
    101,289.69/151,888.37 = 42,090.03/x
  3. Step 3: Cross multiply
    101,289.69x = 151,888.37 × 42,090.03
  4. Step 4: Simplify right side
    101,289.69x = 6,392,985,839.50
  5. Step 5: Solve for x
    x = 6,392,985,839.50/101,289.69
  6. Step 6: Final answer
    x = 63,115.86

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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.