Home / 139,933.16-193,107.48-76,270.76

Finding the Fourth Proportional to 139,933.16, 193,107.48 and 76,270.76

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Solution

The fourth proportional to 139,933.16, 193,107.48 and 76,270.76 is: 105,253.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,933.16 : 193,107.48 = 76,270.76 : x
  2. Step 2: Convert to fraction form
    139,933.16/193,107.48 = 76,270.76/x
  3. Step 3: Cross multiply
    139,933.16x = 193,107.48 × 76,270.76
  4. Step 4: Simplify right side
    139,933.16x = 14,728,454,261.28
  5. Step 5: Solve for x
    x = 14,728,454,261.28/139,933.16
  6. Step 6: Final answer
    x = 105,253.50

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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.