Home / 139,261.79-192,181.05-75,599.61

Finding the Fourth Proportional to 139,261.79, 192,181.05 and 75,599.61

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Solution

The fourth proportional to 139,261.79, 192,181.05 and 75,599.61 is: 104,327.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,261.79 : 192,181.05 = 75,599.61 : x
  2. Step 2: Convert to fraction form
    139,261.79/192,181.05 = 75,599.61/x
  3. Step 3: Cross multiply
    139,261.79x = 192,181.05 × 75,599.61
  4. Step 4: Simplify right side
    139,261.79x = 14,528,812,429.39
  5. Step 5: Solve for x
    x = 14,528,812,429.39/139,261.79
  6. Step 6: Final answer
    x = 104,327.35

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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.