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Finding the Fourth Proportional to 100,699.25, 151,070.88 and 38,369.75

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Solution

The fourth proportional to 100,699.25, 151,070.88 and 38,369.75 is: 57,563.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,699.25 : 151,070.88 = 38,369.75 : x
  2. Step 2: Convert to fraction form
    100,699.25/151,070.88 = 38,369.75/x
  3. Step 3: Cross multiply
    100,699.25x = 151,070.88 × 38,369.75
  4. Step 4: Simplify right side
    100,699.25x = 5,796,551,897.88
  5. Step 5: Solve for x
    x = 5,796,551,897.88/100,699.25
  6. Step 6: Final answer
    x = 57,563.01

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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.