Home / 139,947.21-193,125.67-76,283.64

Finding the Fourth Proportional to 139,947.21, 193,125.67 and 76,283.64

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Solution

The fourth proportional to 139,947.21, 193,125.67 and 76,283.64 is: 105,270.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,947.21 : 193,125.67 = 76,283.64 : x
  2. Step 2: Convert to fraction form
    139,947.21/193,125.67 = 76,283.64/x
  3. Step 3: Cross multiply
    139,947.21x = 193,125.67 × 76,283.64
  4. Step 4: Simplify right side
    139,947.21x = 14,732,328,894.33
  5. Step 5: Solve for x
    x = 14,732,328,894.33/139,947.21
  6. Step 6: Final answer
    x = 105,270.62

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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.