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Finding the Fourth Proportional to 139,542.83, 192,566.90 and 75,880.07

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Solution

The fourth proportional to 139,542.83, 192,566.90 and 75,880.07 is: 104,713.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,542.83 : 192,566.90 = 75,880.07 : x
  2. Step 2: Convert to fraction form
    139,542.83/192,566.90 = 75,880.07/x
  3. Step 3: Cross multiply
    139,542.83x = 192,566.90 × 75,880.07
  4. Step 4: Simplify right side
    139,542.83x = 14,611,988,509.45
  5. Step 5: Solve for x
    x = 14,611,988,509.45/139,542.83
  6. Step 6: Final answer
    x = 104,713.29

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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.