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Finding the Fourth Proportional to 101,645.52, 140,273.89 and 56,319.26

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Solution

The fourth proportional to 101,645.52, 140,273.89 and 56,319.26 is: 77,722.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,645.52 : 140,273.89 = 56,319.26 : x
  2. Step 2: Convert to fraction form
    101,645.52/140,273.89 = 56,319.26/x
  3. Step 3: Cross multiply
    101,645.52x = 140,273.89 × 56,319.26
  4. Step 4: Simplify right side
    101,645.52x = 7,900,121,049.84
  5. Step 5: Solve for x
    x = 7,900,121,049.84/101,645.52
  6. Step 6: Final answer
    x = 77,722.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.