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Finding the Fourth Proportional to 139,308.22, 192,244.08 and 75,642.22

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Solution

The fourth proportional to 139,308.22, 192,244.08 and 75,642.22 is: 104,385.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,308.22 : 192,244.08 = 75,642.22 : x
  2. Step 2: Convert to fraction form
    139,308.22/192,244.08 = 75,642.22/x
  3. Step 3: Cross multiply
    139,308.22x = 192,244.08 × 75,642.22
  4. Step 4: Simplify right side
    139,308.22x = 14,541,768,993.06
  5. Step 5: Solve for x
    x = 14,541,768,993.06/139,308.22
  6. Step 6: Final answer
    x = 104,385.58

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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.