Home / 134,278.20-185,289.39-77,679

Finding the Fourth Proportional to 134,278.20, 185,289.39 and 77,679

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Solution

The fourth proportional to 134,278.20, 185,289.39 and 77,679 is: 107,188.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,278.20 : 185,289.39 = 77,679 : x
  2. Step 2: Convert to fraction form
    134,278.20/185,289.39 = 77,679/x
  3. Step 3: Cross multiply
    134,278.20x = 185,289.39 × 77,679
  4. Step 4: Simplify right side
    134,278.20x = 14,393,094,525.81
  5. Step 5: Solve for x
    x = 14,393,094,525.81/134,278.20
  6. Step 6: Final answer
    x = 107,188.62

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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.