Home / 134,674.09-185,839.32-78,089.11

Finding the Fourth Proportional to 134,674.09, 185,839.32 and 78,089.11

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Solution

The fourth proportional to 134,674.09, 185,839.32 and 78,089.11 is: 107,756.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,674.09 : 185,839.32 = 78,089.11 : x
  2. Step 2: Convert to fraction form
    134,674.09/185,839.32 = 78,089.11/x
  3. Step 3: Cross multiply
    134,674.09x = 185,839.32 × 78,089.11
  4. Step 4: Simplify right side
    134,674.09x = 14,512,027,101.81
  5. Step 5: Solve for x
    x = 14,512,027,101.81/134,674.09
  6. Step 6: Final answer
    x = 107,756.64

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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.