Home / 134,189.12-185,185.68-76,838.72

Finding the Fourth Proportional to 134,189.12, 185,185.68 and 76,838.72

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Solution

The fourth proportional to 134,189.12, 185,185.68 and 76,838.72 is: 106,040.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,189.12 : 185,185.68 = 76,838.72 : x
  2. Step 2: Convert to fraction form
    134,189.12/185,185.68 = 76,838.72/x
  3. Step 3: Cross multiply
    134,189.12x = 185,185.68 × 76,838.72
  4. Step 4: Simplify right side
    134,189.12x = 14,229,430,613.53
  5. Step 5: Solve for x
    x = 14,229,430,613.53/134,189.12
  6. Step 6: Final answer
    x = 106,040.12

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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.