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Finding the Fourth Proportional to 139,206.10, 192,104.94 and 75,543.88

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Solution

The fourth proportional to 139,206.10, 192,104.94 and 75,543.88 is: 104,250.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,206.10 : 192,104.94 = 75,543.88 : x
  2. Step 2: Convert to fraction form
    139,206.10/192,104.94 = 75,543.88/x
  3. Step 3: Cross multiply
    139,206.10x = 192,104.94 × 75,543.88
  4. Step 4: Simplify right side
    139,206.10x = 14,512,352,534.77
  5. Step 5: Solve for x
    x = 14,512,352,534.77/139,206.10
  6. Step 6: Final answer
    x = 104,250.84

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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.