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Finding the Fourth Proportional to 139,281.35, 192,208.25 and 75,619.15

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Solution

The fourth proportional to 139,281.35, 192,208.25 and 75,619.15 is: 104,354.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,281.35 : 192,208.25 = 75,619.15 : x
  2. Step 2: Convert to fraction form
    139,281.35/192,208.25 = 75,619.15/x
  3. Step 3: Cross multiply
    139,281.35x = 192,208.25 × 75,619.15
  4. Step 4: Simplify right side
    139,281.35x = 14,534,624,196.51
  5. Step 5: Solve for x
    x = 14,534,624,196.51/139,281.35
  6. Step 6: Final answer
    x = 104,354.42

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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.