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Finding the Fourth Proportional to 185,307.75, 278,066.72 and 85,468.01

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Solution

The fourth proportional to 185,307.75, 278,066.72 and 85,468.01 is: 128,250.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,307.75 : 278,066.72 = 85,468.01 : x
  2. Step 2: Convert to fraction form
    185,307.75/278,066.72 = 85,468.01/x
  3. Step 3: Cross multiply
    185,307.75x = 278,066.72 × 85,468.01
  4. Step 4: Simplify right side
    185,307.75x = 23,765,809,593.09
  5. Step 5: Solve for x
    x = 23,765,809,593.09/185,307.75
  6. Step 6: Final answer
    x = 128,250.49

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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.