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Finding the Fourth Proportional to 101,307.32, 151,978.26 and 45,167.80

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Solution

The fourth proportional to 101,307.32, 151,978.26 and 45,167.80 is: 67,759.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,307.32 : 151,978.26 = 45,167.80 : x
  2. Step 2: Convert to fraction form
    101,307.32/151,978.26 = 45,167.80/x
  3. Step 3: Cross multiply
    101,307.32x = 151,978.26 × 45,167.80
  4. Step 4: Simplify right side
    101,307.32x = 6,864,523,652.03
  5. Step 5: Solve for x
    x = 6,864,523,652.03/101,307.32
  6. Step 6: Final answer
    x = 67,759.40

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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.