Home / 139,918.53-193,081.95-76,254.96

Finding the Fourth Proportional to 139,918.53, 193,081.95 and 76,254.96

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Solution

The fourth proportional to 139,918.53, 193,081.95 and 76,254.96 is: 105,228.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,918.53 : 193,081.95 = 76,254.96 : x
  2. Step 2: Convert to fraction form
    139,918.53/193,081.95 = 76,254.96/x
  3. Step 3: Cross multiply
    139,918.53x = 193,081.95 × 76,254.96
  4. Step 4: Simplify right side
    139,918.53x = 14,723,456,373.97
  5. Step 5: Solve for x
    x = 14,723,456,373.97/139,918.53
  6. Step 6: Final answer
    x = 105,228.78

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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.