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Finding the Fourth Proportional to 139,516.80, 192,533.60 and 75,854.84

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Solution

The fourth proportional to 139,516.80, 192,533.60 and 75,854.84 is: 104,679.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,516.80 : 192,533.60 = 75,854.84 : x
  2. Step 2: Convert to fraction form
    139,516.80/192,533.60 = 75,854.84/x
  3. Step 3: Cross multiply
    139,516.80x = 192,533.60 × 75,854.84
  4. Step 4: Simplify right side
    139,516.80x = 14,604,605,422.62
  5. Step 5: Solve for x
    x = 14,604,605,422.62/139,516.80
  6. Step 6: Final answer
    x = 104,679.91

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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.