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Finding the Fourth Proportional to 139,276.87, 192,203.28 and 75,614.82

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Solution

The fourth proportional to 139,276.87, 192,203.28 and 75,614.82 is: 104,349.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,276.87 : 192,203.28 = 75,614.82 : x
  2. Step 2: Convert to fraction form
    139,276.87/192,203.28 = 75,614.82/x
  3. Step 3: Cross multiply
    139,276.87x = 192,203.28 × 75,614.82
  4. Step 4: Simplify right side
    139,276.87x = 14,533,415,699.85
  5. Step 5: Solve for x
    x = 14,533,415,699.85/139,276.87
  6. Step 6: Final answer
    x = 104,349.10

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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.