Home / 134,289.20-185,304.56-77,690

Finding the Fourth Proportional to 134,289.20, 185,304.56 and 77,690

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Solution

The fourth proportional to 134,289.20, 185,304.56 and 77,690 is: 107,203.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,289.20 : 185,304.56 = 77,690 : x
  2. Step 2: Convert to fraction form
    134,289.20/185,304.56 = 77,690/x
  3. Step 3: Cross multiply
    134,289.20x = 185,304.56 × 77,690
  4. Step 4: Simplify right side
    134,289.20x = 14,396,311,266.40
  5. Step 5: Solve for x
    x = 14,396,311,266.40/134,289.20
  6. Step 6: Final answer
    x = 107,203.79

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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.