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Finding the Fourth Proportional to 139,228.79, 192,135.87 and 75,566.62

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Solution

The fourth proportional to 139,228.79, 192,135.87 and 75,566.62 is: 104,282.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,228.79 : 192,135.87 = 75,566.62 : x
  2. Step 2: Convert to fraction form
    139,228.79/192,135.87 = 75,566.62/x
  3. Step 3: Cross multiply
    139,228.79x = 192,135.87 × 75,566.62
  4. Step 4: Simplify right side
    139,228.79x = 14,519,058,276.66
  5. Step 5: Solve for x
    x = 14,519,058,276.66/139,228.79
  6. Step 6: Final answer
    x = 104,282.01

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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.