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Finding the Fourth Proportional to 139,239.98, 192,151.34 and 75,577.76

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Solution

The fourth proportional to 139,239.98, 192,151.34 and 75,577.76 is: 104,297.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,239.98 : 192,151.34 = 75,577.76 : x
  2. Step 2: Convert to fraction form
    139,239.98/192,151.34 = 75,577.76/x
  3. Step 3: Cross multiply
    139,239.98x = 192,151.34 × 75,577.76
  4. Step 4: Simplify right side
    139,239.98x = 14,522,367,858.20
  5. Step 5: Solve for x
    x = 14,522,367,858.20/139,239.98
  6. Step 6: Final answer
    x = 104,297.40

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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.