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Finding the Fourth Proportional to 139,459.77, 192,449.25 and 75,796.20

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Solution

The fourth proportional to 139,459.77, 192,449.25 and 75,796.20 is: 104,595.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,459.77 : 192,449.25 = 75,796.20 : x
  2. Step 2: Convert to fraction form
    139,459.77/192,449.25 = 75,796.20/x
  3. Step 3: Cross multiply
    139,459.77x = 192,449.25 × 75,796.20
  4. Step 4: Simplify right side
    139,459.77x = 14,586,921,842.85
  5. Step 5: Solve for x
    x = 14,586,921,842.85/139,459.77
  6. Step 6: Final answer
    x = 104,595.91

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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.