Home / 139,908.75-193,068.44-76,245.18

Finding the Fourth Proportional to 139,908.75, 193,068.44 and 76,245.18

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Solution

The fourth proportional to 139,908.75, 193,068.44 and 76,245.18 is: 105,215.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,908.75 : 193,068.44 = 76,245.18 : x
  2. Step 2: Convert to fraction form
    139,908.75/193,068.44 = 76,245.18/x
  3. Step 3: Cross multiply
    139,908.75x = 193,068.44 × 76,245.18
  4. Step 4: Simplify right side
    139,908.75x = 14,720,537,960.12
  5. Step 5: Solve for x
    x = 14,720,537,960.12/139,908.75
  6. Step 6: Final answer
    x = 105,215.28

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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.