Home / 134,613.09-185,755.28-78,028.11

Finding the Fourth Proportional to 134,613.09, 185,755.28 and 78,028.11

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Solution

The fourth proportional to 134,613.09, 185,755.28 and 78,028.11 is: 107,672.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,613.09 : 185,755.28 = 78,028.11 : x
  2. Step 2: Convert to fraction form
    134,613.09/185,755.28 = 78,028.11/x
  3. Step 3: Cross multiply
    134,613.09x = 185,755.28 × 78,028.11
  4. Step 4: Simplify right side
    134,613.09x = 14,494,133,030.78
  5. Step 5: Solve for x
    x = 14,494,133,030.78/134,613.09
  6. Step 6: Final answer
    x = 107,672.54

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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.